372778361 has 2 divisors, whose sum is σ = 372778362. Its totient is φ = 372778360.

The previous prime is 372778349. The next prime is 372778387. The reversal of 372778361 is 163877273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355096336 + 17682025 = 18844^2 + 4205^2 .

It is a cyclic number.

It is not a de Polignac number, because 372778361 - 2⁶ = 372778297 is a prime.

It is not a weakly prime, because it can be changed into another prime (372778391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186389180 + 186389181.

It is an arithmetic number, because the mean of its divisors is an integer number (186389181).

Almost surely, 2^372778361 is an apocalyptic number.

It is an amenable number.

372778361 is a deficient number, since it is larger than the sum of its proper divisors (1).

372778361 is an equidigital number, since it uses as much as digits as its factorization.

372778361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 44.

The square root of 372778361 is about 19307.4690469776. The cubic root of 372778361 is about 719.6978934464.

The spelling of 372778361 in words is "three hundred seventy-two million, seven hundred seventy-eight thousand, three hundred sixty-one".