1371705730 has 16 divisors (see below), whose sum is σ = 2470466304. Its totient is φ = 548372080.

The previous prime is 1371705721. The next prime is 1371705733. The reversal of 1371705730 is 375071731.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1371705733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19762 + ... + 55981.

It is an arithmetic number, because the mean of its divisors is an integer number (154404144).

Almost surely, 2^1371705730 is an apocalyptic number.

1371705730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1371705730 is a deficient number, since it is larger than the sum of its proper divisors (1098760574).

1371705730 is a wasteful number, since it uses less digits than its factorization.

1371705730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77561.

The product of its (nonzero) digits is 15435, while the sum is 34.

The square root of 1371705730 is about 37036.5458702617. The cubic root of 1371705730 is about 1111.1012877539.

The spelling of 1371705730 in words is "one billion, three hundred seventy-one million, seven hundred five thousand, seven hundred thirty".