1616251164 has 24 divisors (see below), whose sum is σ = 4114094208. Its totient is φ = 489773040.

The previous prime is 1616251141. The next prime is 1616251199. The reversal of 1616251164 is 4611526161.

It is a super-2 number, since 2×1616251164² = 5224535650262709792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6122032 + ... + 6122295.

It is an arithmetic number, because the mean of its divisors is an integer number (171420592).

Almost surely, 2^1616251164 is an apocalyptic number.

It is an amenable number.

1616251164 is an abundant number, since it is smaller than the sum of its proper divisors (2497843044).

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

1616251164 is a wasteful number, since it uses less digits than its factorization.

1616251164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12244345 (or 12244343 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 1616251164 is about 40202.6263321191. The cubic root of 1616251164 is about 1173.5536545707.

The spelling of 1616251164 in words is "one billion, six hundred sixteen million, two hundred fifty-one thousand, one hundred sixty-four".