1616857253 has 16 divisors (see below), whose sum is σ = 1777531392. Its totient is φ = 1458504000.

The previous prime is 1616857247. The next prime is 1616857303. The reversal of 1616857253 is 3527586161.

It is a cyclic number.

It is not a de Polignac number, because 1616857253 - 2⁴ = 1616857237 is a prime.

It is a super-2 number, since 2×1616857253² = 5228454753157412018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616857153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1717763 + ... + 1718703.

It is an arithmetic number, because the mean of its divisors is an integer number (111095712).

Almost surely, 2^1616857253 is an apocalyptic number.

It is an amenable number.

1616857253 is a deficient number, since it is larger than the sum of its proper divisors (160674139).

1616857253 is a wasteful number, since it uses less digits than its factorization.

1616857253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996.

The product of its digits is 302400, while the sum is 44.

The square root of 1616857253 is about 40210.1635535097. The cubic root of 1616857253 is about 1173.7003291896.

The spelling of 1616857253 in words is "one billion, six hundred sixteen million, eight hundred fifty-seven thousand, two hundred fifty-three".