1381149790 has 16 divisors (see below), whose sum is σ = 2532977568. Its totient is φ = 542035936.

The previous prime is 1381149787. The next prime is 1381149827. The reversal of 1381149790 is 979411831.

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, 1302442 + ... + 1303501.

It is an arithmetic number, because the mean of its divisors is an integer number (158311098).

Almost surely, 2^1381149790 is an apocalyptic number.

1381149790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1381149790 is a deficient number, since it is larger than the sum of its proper divisors (1151827778).

1381149790 is a wasteful number, since it uses less digits than its factorization.

1381149790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606003.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 1381149790 is about 37163.8236730291. The cubic root of 1381149790 is about 1113.6453992911.

The spelling of 1381149790 in words is "one billion, three hundred eighty-one million, one hundred forty-nine thousand, seven hundred ninety".