1616803974 has 24 divisors (see below), whose sum is σ = 3687448440. Its totient is φ = 510569568.

The previous prime is 1616803973. The next prime is 1616804011. The reversal of 1616803974 is 4793086161.

It is a happy number.

It is a super-2 number, since 2×1616803974² = 5228110180684385352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616803973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2363407 + ... + 2364090.

It is an arithmetic number, because the mean of its divisors is an integer number (153643685).

Almost surely, 2^1616803974 is an apocalyptic number.

1616803974 is an abundant number, since it is smaller than the sum of its proper divisors (2070644466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1616803974 is a wasteful number, since it uses less digits than its factorization.

1616803974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4727524 (or 4727521 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1616803974 is about 40209.5010414205. The cubic root of 1616803974 is about 1173.6874370461.

The spelling of 1616803974 in words is "one billion, six hundred sixteen million, eight hundred three thousand, nine hundred seventy-four".