37972428409 has 4 divisors (see below), whose sum is σ = 37978404340. Its totient is φ = 37966452480.

The previous prime is 37972428341. The next prime is 37972428419. The reversal of 37972428409 is 90482427973.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9959042025 + 28013386384 = 99795^2 + 167372^2 .

It is a cyclic number.

It is not a de Polignac number, because 37972428409 - 2²³ = 37964039801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 37972428409.

It is not an unprimeable number, because it can be changed into a prime (37972428419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2978424 + ... + 2991145.

It is an arithmetic number, because the mean of its divisors is an integer number (9494601085).

Almost surely, 2^37972428409 is an apocalyptic number.

It is an amenable number.

37972428409 is a deficient number, since it is larger than the sum of its proper divisors (5975931).

37972428409 is an equidigital number, since it uses as much as digits as its factorization.

37972428409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975930.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 37972428409 in words is "thirty-seven billion, nine hundred seventy-two million, four hundred twenty-eight thousand, four hundred nine".