38949021746 has 4 divisors (see below), whose sum is σ = 58423532622. Its totient is φ = 19474510872.

The previous prime is 38949021707. The next prime is 38949021751. The reversal of 38949021746 is 64712094983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64712094983 = 2777 ⋅23302879.

It can be written as a sum of positive squares in only one way, i.e., 26193804025 + 12755217721 = 161845^2 + 112939^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9737255435 + ... + 9737255438.

Almost surely, 2^38949021746 is an apocalyptic number.

38949021746 is a deficient number, since it is larger than the sum of its proper divisors (19474510876).

38949021746 is a wasteful number, since it uses less digits than its factorization.

38949021746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19474510875.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 38949021746 in words is "thirty-eight billion, nine hundred forty-nine million, twenty-one thousand, seven hundred forty-six".