1474273721 has 4 divisors (see below), whose sum is σ = 1476147792. Its totient is φ = 1472399652.

The previous prime is 1474273699. The next prime is 1474273729. The reversal of 1474273721 is 1273724741.

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 1474273721 - 2¹⁰ = 1474272697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1474273729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935855 + ... + 937428.

It is an arithmetic number, because the mean of its divisors is an integer number (369036948).

Almost surely, 2^1474273721 is an apocalyptic number.

It is an amenable number.

1474273721 is a deficient number, since it is larger than the sum of its proper divisors (1874071).

1474273721 is an equidigital number, since it uses as much as digits as its factorization.

1474273721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874070.

The product of its digits is 65856, while the sum is 38.

The square root of 1474273721 is about 38396.2722279130. The cubic root of 1474273721 is about 1138.1321935362.

The spelling of 1474273721 in words is "one billion, four hundred seventy-four million, two hundred seventy-three thousand, seven hundred twenty-one".