380491345 has 16 divisors (see below), whose sum is σ = 492826320. Its totient is φ = 280341504.

The previous prime is 380491337. The next prime is 380491351. The reversal of 380491345 is 543194083.

It can be written as a sum of positive squares in 8 ways, for example, as 9235521 + 371255824 = 3039^2 + 19268^2 .

It is a cyclic number.

It is not a de Polignac number, because 380491345 - 2³ = 380491337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23301 + ... + 36109.

It is an arithmetic number, because the mean of its divisors is an integer number (30801645).

Almost surely, 2^380491345 is an apocalyptic number.

It is an amenable number.

380491345 is a deficient number, since it is larger than the sum of its proper divisors (112334975).

380491345 is a wasteful number, since it uses less digits than its factorization.

380491345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13284.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 380491345 is about 19506.1873517097. The cubic root of 380491345 is about 724.6276931079.

The spelling of 380491345 in words is "three hundred eighty million, four hundred ninety-one thousand, three hundred forty-five".