1889130690 has 48 divisors (see below), whose sum is σ = 5016256128. Its totient is φ = 493048608.

The previous prime is 1889130629. The next prime is 1889130697. The reversal of 1889130690 is 960319881.

It is a super-2 number, since 2×1889130690² = 7137629527799752200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1889130697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219072 + ... + 227531.

It is an arithmetic number, because the mean of its divisors is an integer number (104505336).

Almost surely, 2^1889130690 is an apocalyptic number.

1889130690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1889130690 is an abundant number, since it is smaller than the sum of its proper divisors (3127125438).

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

1889130690 is a wasteful number, since it uses less digits than its factorization.

1889130690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446663 (or 446660 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 1889130690 is about 43464.1310737946. The cubic root of 1889130690 is about 1236.1960013737.

The spelling of 1889130690 in words is "one billion, eight hundred eighty-nine million, one hundred thirty thousand, six hundred ninety".