1890525738 has 16 divisors (see below), whose sum is σ = 3806093376. Its totient is φ = 626001600.

The previous prime is 1890525737. The next prime is 1890525739. The reversal of 1890525738 is 8375250981.

It is an interprime number because it is at equal distance from previous prime (1890525737) and next prime (1890525739).

It is not an unprimeable number, because it can be changed into a prime (1890525737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042431 + ... + 1044242.

It is an arithmetic number, because the mean of its divisors is an integer number (237880836).

Almost surely, 2^1890525738 is an apocalyptic number.

1890525738 is an abundant number, since it is smaller than the sum of its proper divisors (1915567638).

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

1890525738 is a wasteful number, since it uses less digits than its factorization.

1890525738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086829.

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 1890525738 is about 43480.1763795871. The cubic root of 1890525738 is about 1236.5002203880.

The spelling of 1890525738 in words is "one billion, eight hundred ninety million, five hundred twenty-five thousand, seven hundred thirty-eight".