1378165460 has 24 divisors (see below), whose sum is σ = 3307597440. Its totient is φ = 472513824.

The previous prime is 1378165433. The next prime is 1378165471. The reversal of 1378165460 is 645618731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4921880 + ... + 4922159.

It is an arithmetic number, because the mean of its divisors is an integer number (137816560).

Almost surely, 2^1378165460 is an apocalyptic number.

1378165460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378165460 is an abundant number, since it is smaller than the sum of its proper divisors (1929431980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1378165460 is a wasteful number, since it uses less digits than its factorization.

1378165460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9844055 (or 9844053 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1378165460 is about 37123.6509519201. The cubic root of 1378165460 is about 1112.8427149323.

The spelling of 1378165460 in words is "one billion, three hundred seventy-eight million, one hundred sixty-five thousand, four hundred sixty".