1653171216 has 40 divisors (see below), whose sum is σ = 4417961280. Its totient is φ = 532054656.

The previous prime is 1653171139. The next prime is 1653171227. The reversal of 1653171216 is 6121713561.

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, 592420 + ... + 595203.

It is an arithmetic number, because the mean of its divisors is an integer number (110449032).

Almost surely, 2^1653171216 is an apocalyptic number.

1653171216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1653171216 is an abundant number, since it is smaller than the sum of its proper divisors (2764790064).

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

1653171216 is a wasteful number, since it uses less digits than its factorization.

1653171216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187663 (or 1187657 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 1653171216 is about 40659.2082559412. The cubic root of 1653171216 is about 1182.4222997962.

Adding to 1653171216 its reverse (6121713561), we get a palindrome (7774884777).

The spelling of 1653171216 in words is "one billion, six hundred fifty-three million, one hundred seventy-one thousand, two hundred sixteen".