38721547954 has 8 divisors (see below), whose sum is σ = 58182986268. Its totient is φ = 19327219200.

The previous prime is 38721547919. The next prime is 38721547961. The reversal of 38721547954 is 45974512783.

It can be written as a sum of positive squares in 2 ways, for example, as 37994975929 + 726572025 = 194923^2 + 26955^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×38721547954² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38721547895 and 38721547904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16775947 + ... + 16778254.

Almost surely, 2^38721547954 is an apocalyptic number.

38721547954 is a deficient number, since it is larger than the sum of its proper divisors (19461438314).

38721547954 is a wasteful number, since it uses less digits than its factorization.

38721547954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33554780.

The product of its digits is 8467200, while the sum is 55.

The spelling of 38721547954 in words is "thirty-eight billion, seven hundred twenty-one million, five hundred forty-seven thousand, nine hundred fifty-four".