1616142253 has 4 divisors (see below), whose sum is σ = 1763064288. Its totient is φ = 1469220220.

The previous prime is 1616142217. The next prime is 1616142259. The reversal of 1616142253 is 3522416161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1616142253 is a prime.

It is a super-2 number, since 2×1616142253² = 5223831563863832018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616142259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73461001 + ... + 73461022.

It is an arithmetic number, because the mean of its divisors is an integer number (440766072).

Almost surely, 2^1616142253 is an apocalyptic number.

It is an amenable number.

1616142253 is a deficient number, since it is larger than the sum of its proper divisors (146922035).

1616142253 is a wasteful number, since it uses less digits than its factorization.

1616142253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146922034.

The product of its digits is 8640, while the sum is 31.

The square root of 1616142253 is about 40201.2717833653. The cubic root of 1616142253 is about 1173.5272940281.

The spelling of 1616142253 in words is "one billion, six hundred sixteen million, one hundred forty-two thousand, two hundred fifty-three".