1374205681 has 4 divisors (see below), whose sum is σ = 1374590272. Its totient is φ = 1373821092.

The previous prime is 1374205669. The next prime is 1374205691. The reversal of 1374205681 is 1865024731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1374205681 - 2⁵ = 1374205649 is a prime.

It is a super-2 number, since 2×1374205681² = 3776882507385347522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1374205681.

It is not an unprimeable number, because it can be changed into a prime (1374205691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186885 + ... + 194098.

It is an arithmetic number, because the mean of its divisors is an integer number (343647568).

Almost surely, 2^1374205681 is an apocalyptic number.

It is an amenable number.

1374205681 is a deficient number, since it is larger than the sum of its proper divisors (384591).

1374205681 is an equidigital number, since it uses as much as digits as its factorization.

1374205681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384590.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1374205681 is about 37070.2802929786. The cubic root of 1374205681 is about 1111.7758768093.

The spelling of 1374205681 in words is "one billion, three hundred seventy-four million, two hundred five thousand, six hundred eighty-one".