379641815 has 16 divisors (see below), whose sum is σ = 522643968. Its totient is φ = 259329696.

The previous prime is 379641811. The next prime is 379641853. The reversal of 379641815 is 518146973.

It is a cyclic number.

It is not a de Polignac number, because 379641815 - 2² = 379641811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379641811) 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, 11417 + ... + 29826.

It is an arithmetic number, because the mean of its divisors is an integer number (32665248).

Almost surely, 2^379641815 is an apocalyptic number.

379641815 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

379641815 is a deficient number, since it is larger than the sum of its proper divisors (143002153).

379641815 is a wasteful number, since it uses less digits than its factorization.

379641815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41518.

The product of its digits is 181440, while the sum is 44.

The square root of 379641815 is about 19484.3992722383. The cubic root of 379641815 is about 724.0879947329.

The spelling of 379641815 in words is "three hundred seventy-nine million, six hundred forty-one thousand, eight hundred fifteen".