37783868738 has 72 divisors (see below), whose sum is σ = 76730606316. Its totient is φ = 13854973440.

The previous prime is 37783868659. The next prime is 37783868761. The reversal of 37783868738 is 83786838773.

It can be written as a sum of positive squares in 2 ways, for example, as 35850771649 + 1933097089 = 189343^2 + 43967^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 107870 + ... + 295302.

Almost surely, 2^37783868738 is an apocalyptic number.

37783868738 is an abundant number, since it is smaller than the sum of its proper divisors (38946737578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

37783868738 is a wasteful number, since it uses less digits than its factorization.

37783868738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187488 (or 187470 counting only the distinct ones).

The product of its digits is 227598336, while the sum is 68.

The spelling of 37783868738 in words is "thirty-seven billion, seven hundred eighty-three million, eight hundred sixty-eight thousand, seven hundred thirty-eight".