38513869 has 4 divisors (see below), whose sum is σ = 38808000. Its totient is φ = 38219740.

The previous prime is 38513837. The next prime is 38513897. The reversal of 38513869 is 96831583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38513869 - 2⁵ = 38513837 is a prime.

It is a super-2 number, since 2×38513869² = 2966636210698322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38513809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146869 + ... + 147130.

It is an arithmetic number, because the mean of its divisors is an integer number (9702000).

Almost surely, 2^38513869 is an apocalyptic number.

It is an amenable number.

38513869 is a deficient number, since it is larger than the sum of its proper divisors (294131).

38513869 is a wasteful number, since it uses less digits than its factorization.

38513869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294130.

The product of its digits is 155520, while the sum is 43.

The square root of 38513869 is about 6205.9543182334. The cubic root of 38513869 is about 337.7062121591.

The spelling of 38513869 in words is "thirty-eight million, five hundred thirteen thousand, eight hundred sixty-nine".