372642809 has 16 divisors (see below), whose sum is σ = 475929216. Its totient is φ = 283286400.

The previous prime is 372642713. The next prime is 372642821. The reversal of 372642809 is 908246273.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 372642809 - 2¹⁶ = 372577273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (372642889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55862 + ... + 62175.

It is an arithmetic number, because the mean of its divisors is an integer number (29745576).

Almost surely, 2^372642809 is an apocalyptic number.

It is an amenable number.

372642809 is a deficient number, since it is larger than the sum of its proper divisors (103286407).

372642809 is a wasteful number, since it uses less digits than its factorization.

372642809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118096.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 372642809 is about 19303.9583764574. The cubic root of 372642809 is about 719.6106491872.

The spelling of 372642809 in words is "three hundred seventy-two million, six hundred forty-two thousand, eight hundred nine".