1378089740 has 24 divisors (see below), whose sum is σ = 2897417040. Its totient is φ = 550582848.

The previous prime is 1378089731. The next prime is 1378089763. The reversal of 1378089740 is 479808731.

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, 23330 + ... + 57449.

It is an arithmetic number, because the mean of its divisors is an integer number (120725710).

Almost surely, 2^1378089740 is an apocalyptic number.

1378089740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378089740 is an abundant number, since it is smaller than the sum of its proper divisors (1519327300).

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

1378089740 is a wasteful number, since it uses less digits than its factorization.

1378089740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81641 (or 81639 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 1378089740 is about 37122.6311028731. The cubic root of 1378089740 is about 1112.8223337332.

The spelling of 1378089740 in words is "one billion, three hundred seventy-eight million, eighty-nine thousand, seven hundred forty".