9511790738 has 6 divisors (see below), whose sum is σ = 14267892999. Its totient is φ = 4755826406.

The previous prime is 9511790731. The next prime is 9511790767. The reversal of 9511790738 is 8370971159.

It can be written as a sum of positive squares in only one way, i.e., 4755895369 + 4755895369 = 68963^2 + 68963^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=68963.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9511790731) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 103445 + ... + 172407.

Almost surely, 2^9511790738 is an apocalyptic number.

9511790738 is a deficient number, since it is larger than the sum of its proper divisors (4756102261).

9511790738 is an frugal number, since it uses more digits than its factorization.

9511790738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137928 (or 68965 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 50.

The square root of 9511790738 is about 97528.4099019358. The cubic root of 9511790738 is about 2118.7876313942.

Multiplying 9511790738 by its sum of digits (50), we get a square (475589536900 = 689630²).

The spelling of 9511790738 in words is "nine billion, five hundred eleven million, seven hundred ninety thousand, seven hundred thirty-eight".