38154969 has 20 divisors (see below), whose sum is σ = 58392180. Its totient is φ = 24814080.

The previous prime is 38154967. The next prime is 38154997. The reversal of 38154969 is 96945183.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4665600 + 33489369 = 2160^2 + 5787^2 .

It is not a de Polignac number, because 38154969 - 2¹ = 38154967 is a prime.

It is a super-2 number, since 2×38154969² = 2911603318781922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38154967) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2424 + ... + 9065.

It is an arithmetic number, because the mean of its divisors is an integer number (2919609).

Almost surely, 2^38154969 is an apocalyptic number.

It is an amenable number.

38154969 is a deficient number, since it is larger than the sum of its proper divisors (20237211).

38154969 is a wasteful number, since it uses less digits than its factorization.

38154969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11542 (or 11533 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 38154969 is about 6176.9708595719. The cubic root of 38154969 is about 336.6539400912.

The spelling of 38154969 in words is "thirty-eight million, one hundred fifty-four thousand, nine hundred sixty-nine".