1616028453 has 12 divisors (see below), whose sum is σ = 2513822220. Its totient is φ = 994478976.

The previous prime is 1616028443. The next prime is 1616028493. The reversal of 1616028453 is 3548206161.

It is a happy number.

1616028453 is a `hidden beast` number, since 1 + 6 + 1 + 602 + 8 + 45 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 960566049 + 655462404 = 30993^2 + 25602^2 .

It is not a de Polignac number, because 1616028453 - 2⁴ = 1616028437 is a prime.

It is a super-2 number, since 2×1616028453² = 5223095921811146418, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616028433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6905988 + ... + 6906221.

It is an arithmetic number, because the mean of its divisors is an integer number (209485185).

Almost surely, 2^1616028453 is an apocalyptic number.

1616028453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1616028453 is a deficient number, since it is larger than the sum of its proper divisors (897793767).

1616028453 is a wasteful number, since it uses less digits than its factorization.

1616028453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13812228 (or 13812225 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1616028453 is about 40199.8563803405. The cubic root of 1616028453 is about 1173.4997488990.

The spelling of 1616028453 in words is "one billion, six hundred sixteen million, twenty-eight thousand, four hundred fifty-three".