814957380 has 36 divisors (see below), whose sum is σ = 2472037932. Its totient is φ = 217321920.

The previous prime is 814957379. The next prime is 814957397. The reversal of 814957380 is 83759418.

814957380 is a `hidden beast` number, since 81 + 495 + 7 + 3 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 596922624 + 218034756 = 24432^2 + 14766^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2263591 + ... + 2263950.

Almost surely, 2^814957380 is an apocalyptic number.

It is an amenable number.

814957380 is an abundant number, since it is smaller than the sum of its proper divisors (1657080552).

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

814957380 is a wasteful number, since it uses less digits than its factorization.

814957380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527556 (or 4527551 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 814957380 is about 28547.4583807386. The cubic root of 814957380 is about 934.0675806676.

The spelling of 814957380 in words is "eight hundred fourteen million, nine hundred fifty-seven thousand, three hundred eighty".