1621014074 has 4 divisors (see below), whose sum is σ = 2431521114. Its totient is φ = 810507036.

The previous prime is 1621014019. The next prime is 1621014113. The reversal of 1621014074 is 4704101261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 918393025 + 702621049 = 30305^2 + 26507^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405253517 + ... + 405253520.

Almost surely, 2^1621014074 is an apocalyptic number.

1621014074 is a deficient number, since it is larger than the sum of its proper divisors (810507040).

1621014074 is an equidigital number, since it uses as much as digits as its factorization.

1621014074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810507039.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1621014074 is about 40261.8190597494. The cubic root of 1621014074 is about 1174.7053008330.

The spelling of 1621014074 in words is "one billion, six hundred twenty-one million, fourteen thousand, seventy-four".