38158897 has 24 divisors (see below), whose sum is σ = 49494240. Its totient is φ = 29151360.

The previous prime is 38158891. The next prime is 38158903. The reversal of 38158897 is 79885183.

It is an interprime number because it is at equal distance from previous prime (38158891) and next prime (38158903).

It is not a de Polignac number, because 38158897 - 2³ = 38158889 is a prime.

It is a super-2 number, since 2×38158897² = 2912202840513218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 38158897.

It is not an unprimeable number, because it can be changed into a prime (38158891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14622 + ... + 17032.

It is an arithmetic number, because the mean of its divisors is an integer number (2062260).

Almost surely, 2^38158897 is an apocalyptic number.

It is an amenable number.

38158897 is a deficient number, since it is larger than the sum of its proper divisors (11335343).

38158897 is a wasteful number, since it uses less digits than its factorization.

38158897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461 (or 2454 counting only the distinct ones).

The product of its digits is 483840, while the sum is 49.

The square root of 38158897 is about 6177.2888065882. The cubic root of 38158897 is about 336.6654923768.

The spelling of 38158897 in words is "thirty-eight million, one hundred fifty-eight thousand, eight hundred ninety-seven".