1890734265 has 64 divisors (see below), whose sum is σ = 3847749120. Its totient is φ = 862928640.

The previous prime is 1890734233. The next prime is 1890734281. The reversal of 1890734265 is 5624370981.

1890734265 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1890734265 - 2⁵ = 1890734233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

1890734265 is a modest number, since divided by 734265 gives 1890 as remainder.

1890734265 is strictly pandigital in base 10.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1890734265.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 774627 + ... + 777063.

It is an arithmetic number, because the mean of its divisors is an integer number (60121080).

It is a 1-persistent number, because it is pandigital, but 2⋅1890734265 = 3781468530 is not.

Almost surely, 2^1890734265 is an apocalyptic number.

1890734265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1890734265 is an abundant number, since it is smaller than the sum of its proper divisors (1957014855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1890734265 is a wasteful number, since it uses less digits than its factorization.

1890734265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279 (or 3273 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1890734265 is about 43482.5742683204. The cubic root of 1890734265 is about 1236.5456811464.

The spelling of 1890734265 in words is "one billion, eight hundred ninety million, seven hundred thirty-four thousand, two hundred sixty-five".