1273381730 has 16 divisors (see below), whose sum is σ = 2366025984. Its totient is φ = 492921840.

The previous prime is 1273381693. The next prime is 1273381741. The reversal of 1273381730 is 371833721.

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, 2053532 + ... + 2054151.

It is an arithmetic number, because the mean of its divisors is an integer number (147876624).

Almost surely, 2^1273381730 is an apocalyptic number.

1273381730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1273381730 is a deficient number, since it is larger than the sum of its proper divisors (1092644254).

1273381730 is a wasteful number, since it uses less digits than its factorization.

1273381730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107721.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 1273381730 is about 35684.4746353369. The cubic root of 1273381730 is about 1083.8924841055.

The spelling of 1273381730 in words is "one billion, two hundred seventy-three million, three hundred eighty-one thousand, seven hundred thirty".