380145815 has 16 divisors (see below), whose sum is σ = 521923392. Its totient is φ = 260381184.

The previous prime is 380145811. The next prime is 380145841. The reversal of 380145815 is 518541083.

It is not a de Polignac number, because 380145815 - 2² = 380145811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380145811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28637 + ... + 39753.

It is an arithmetic number, because the mean of its divisors is an integer number (32620212).

Almost surely, 2^380145815 is an apocalyptic number.

380145815 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

380145815 is a deficient number, since it is larger than the sum of its proper divisors (141777577).

380145815 is a wasteful number, since it uses less digits than its factorization.

380145815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12106.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 380145815 is about 19497.3284067331. The cubic root of 380145815 is about 724.4082781858.

Adding to 380145815 its reverse (518541083), we get a palindrome (898686898).

The spelling of 380145815 in words is "three hundred eighty million, one hundred forty-five thousand, eight hundred fifteen".