1378960215 has 32 divisors (see below), whose sum is σ = 2291509440. Its totient is φ = 707503104.

The previous prime is 1378960159. The next prime is 1378960223. The reversal of 1378960215 is 5120698731.

It is not a de Polignac number, because 1378960215 - 2¹³ = 1378952023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35437 + ... + 63353.

It is an arithmetic number, because the mean of its divisors is an integer number (71609670).

Almost surely, 2^1378960215 is an apocalyptic number.

1378960215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1378960215 is a deficient number, since it is larger than the sum of its proper divisors (912549225).

1378960215 is a wasteful number, since it uses less digits than its factorization.

1378960215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28051.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1378960215 is about 37134.3535691683. The cubic root of 1378960215 is about 1113.0565904019.

The spelling of 1378960215 in words is "one billion, three hundred seventy-eight million, nine hundred sixty thousand, two hundred fifteen".