37945932640729 has 3 divisors (see below), whose sum is σ = 37945938800757. Its totient is φ = 37945926480702.

The previous prime is 37945932640663. The next prime is 37945932640741. The reversal of 37945932640729 is 92704623954973.

The square root of 37945932640729 is 6160027.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 37945932640729 - 2⁴³ = 29149839618521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37945932640229) 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, 3080014 + ... + 9240040.

It is an arithmetic number, because the mean of its divisors is an integer number (12648646266919).

Almost surely, 2^{37945932640729} is an apocalyptic number.

37945932640729 is the 6160027-th square number.

37945932640729 is the 3080014-th centered octagonal number.

It is an amenable number.

37945932640729 is a deficient number, since it is larger than the sum of its proper divisors (6160028).

37945932640729 is an frugal number, since it uses more digits than its factorization.

37945932640729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12320054 (or 6160027 counting only the distinct ones).

The product of its (nonzero) digits is 617258880, while the sum is 70.

The spelling of 37945932640729 in words is "thirty-seven trillion, nine hundred forty-five billion, nine hundred thirty-two million, six hundred forty thousand, seven hundred twenty-nine".