38951778002 has 4 divisors (see below), whose sum is σ = 58427667006. Its totient is φ = 19475889000.

The previous prime is 38951777983. The next prime is 38951778043. The reversal of 38951778002 is 20087715983.

38951778002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 31716404281 + 7235373721 = 178091^2 + 85061^2 .

It is a super-2 number, since 2×38951778002² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9737944499 + ... + 9737944502.

Almost surely, 2^38951778002 is an apocalyptic number.

38951778002 is a deficient number, since it is larger than the sum of its proper divisors (19475889004).

38951778002 is a wasteful number, since it uses less digits than its factorization.

38951778002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19475889003.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 38951778002 in words is "thirty-eight billion, nine hundred fifty-one million, seven hundred seventy-eight thousand, two".