1616531480 has 32 divisors (see below), whose sum is σ = 3735501840. Its totient is φ = 629136000.

The previous prime is 1616531467. The next prime is 1616531507. The reversal of 1616531480 is 841356161.

It is a super-3 number, since 3×1616531480³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1616531480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544646 + ... + 547605.

Almost surely, 2^1616531480 is an apocalyptic number.

1616531480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1616531480 is an abundant number, since it is smaller than the sum of its proper divisors (2118970360).

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

1616531480 is a wasteful number, since it uses less digits than its factorization.

1616531480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092299 (or 1092295 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1616531480 is about 40206.1124706182. The cubic root of 1616531480 is about 1173.6214960995.

The spelling of 1616531480 in words is "one billion, six hundred sixteen million, five hundred thirty-one thousand, four hundred eighty".