1802072538 has 48 divisors (see below), whose sum is σ = 4466404800. Its totient is φ = 514401408.

The previous prime is 1802072521. The next prime is 1802072567. The reversal of 1802072538 is 8352702081.

It is a super-2 number, since 2×1802072538² = 6494930864427522888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143538 + ... + 155586.

It is an arithmetic number, because the mean of its divisors is an integer number (93050100).

Almost surely, 2^1802072538 is an apocalyptic number.

1802072538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1802072538 is an abundant number, since it is smaller than the sum of its proper divisors (2664332262).

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

1802072538 is a wasteful number, since it uses less digits than its factorization.

1802072538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13251 (or 13248 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1802072538 is about 42450.8249389809. The cubic root of 1802072538 is about 1216.9070939214.

The spelling of 1802072538 in words is "one billion, eight hundred two million, seventy-two thousand, five hundred thirty-eight".