1253785038 has 16 divisors (see below), whose sum is σ = 2735531136. Its totient is φ = 379934840.

The previous prime is 1253785031. The next prime is 1253785051. The reversal of 1253785038 is 8305873521.

It is a super-2 number, since 2×1253785038² = 3143953843025322888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253785031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9498306 + ... + 9498437.

It is an arithmetic number, because the mean of its divisors is an integer number (170970696).

Almost surely, 2^1253785038 is an apocalyptic number.

1253785038 is an abundant number, since it is smaller than the sum of its proper divisors (1481746098).

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

1253785038 is a wasteful number, since it uses less digits than its factorization.

1253785038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18996759.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 1253785038 is about 35408.8271198016. The cubic root of 1253785038 is about 1078.3035317065.

The spelling of 1253785038 in words is "one billion, two hundred fifty-three million, seven hundred eighty-five thousand, thirty-eight".