38111998 has 16 divisors (see below), whose sum is σ = 58919760. Its totient is φ = 18475776.

The previous prime is 38111987. The next prime is 38111999. The reversal of 38111998 is 89911183.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 38111998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38111999) 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, 25393 + ... + 26851.

It is an arithmetic number, because the mean of its divisors is an integer number (3682485).

Almost surely, 2^38111998 is an apocalyptic number.

38111998 is a deficient number, since it is larger than the sum of its proper divisors (20807762).

38111998 is a wasteful number, since it uses less digits than its factorization.

38111998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851.

The product of its digits is 15552, while the sum is 40.

The square root of 38111998 is about 6173.4915566477. The cubic root of 38111998 is about 336.5275101572.

The spelling of 38111998 in words is "thirty-eight million, one hundred eleven thousand, nine hundred ninety-eight".