1616723474 has 4 divisors (see below), whose sum is σ = 2425085214. Its totient is φ = 808361736.

The previous prime is 1616723461. The next prime is 1616723539. The reversal of 1616723474 is 4743276161.

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., 1588580449 + 28143025 = 39857^2 + 5305^2 .

It is a super-2 number, since 2×1616723474² = 5227589582765257352, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404180867 + ... + 404180870.

Almost surely, 2^1616723474 is an apocalyptic number.

1616723474 is a deficient number, since it is larger than the sum of its proper divisors (808361740).

1616723474 is an equidigital number, since it uses as much as digits as its factorization.

1616723474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808361739.

The product of its digits is 169344, while the sum is 41.

The square root of 1616723474 is about 40208.5000217616. The cubic root of 1616723474 is about 1173.6679575858.

The spelling of 1616723474 in words is "one billion, six hundred sixteen million, seven hundred twenty-three thousand, four hundred seventy-four".