1038681855 has 12 divisors (see below), whose sum is σ = 1800381960. Its totient is φ = 553963632.

The previous prime is 1038681851. The next prime is 1038681859. The reversal of 1038681855 is 5581868301.

It is an interprime number because it is at equal distance from previous prime (1038681851) and next prime (1038681859).

It is not a de Polignac number, because 1038681855 - 2² = 1038681851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 23081819 = 1038681855 / (1 + 0 + 3 + 8 + 6 + 8 + 1 + 8 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1038681855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1038681851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11540865 + ... + 11540954.

It is an arithmetic number, because the mean of its divisors is an integer number (150031830).

Almost surely, 2^1038681855 is an apocalyptic number.

1038681855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1038681855 is a deficient number, since it is larger than the sum of its proper divisors (761700105).

1038681855 is a wasteful number, since it uses less digits than its factorization.

1038681855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23081830 (or 23081827 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 1038681855 is about 32228.5875427391. The cubic root of 1038681855 is about 1012.7311808646.

The spelling of 1038681855 in words is "one billion, thirty-eight million, six hundred eighty-one thousand, eight hundred fifty-five".