814607381 has 4 divisors (see below), whose sum is σ = 930979872. Its totient is φ = 698234892.

The previous prime is 814607369. The next prime is 814607383. The reversal of 814607381 is 183706418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 814607381 - 2⁶ = 814607317 is a prime.

It is a super-2 number, since 2×814607381² = 1327170370359358322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814607383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58186235 + ... + 58186248.

It is an arithmetic number, because the mean of its divisors is an integer number (232744968).

Almost surely, 2^814607381 is an apocalyptic number.

It is an amenable number.

814607381 is a deficient number, since it is larger than the sum of its proper divisors (116372491).

814607381 is a wasteful number, since it uses less digits than its factorization.

814607381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116372490.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 814607381 is about 28541.3275970127. The cubic root of 814607381 is about 933.9338438042.

The spelling of 814607381 in words is "eight hundred fourteen million, six hundred seven thousand, three hundred eighty-one".