1616779395 has 48 divisors (see below), whose sum is σ = 3493930752. Its totient is φ = 671906880.

The previous prime is 1616779379. The next prime is 1616779421. The reversal of 1616779395 is 5939776161.

It is a happy number.

It is not a de Polignac number, because 1616779395 - 2⁴ = 1616779379 is a prime.

It is a super-2 number, since 2×1616779395² = 5227951224193132050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229837 + ... + 236766.

It is an arithmetic number, because the mean of its divisors is an integer number (72790224).

Almost surely, 2^1616779395 is an apocalyptic number.

1616779395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1616779395 is an abundant number, since it is smaller than the sum of its proper divisors (1877151357).

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

1616779395 is a wasteful number, since it uses less digits than its factorization.

1616779395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466632 (or 466629 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 54.

The square root of 1616779395 is about 40209.1954035392. The cubic root of 1616779395 is about 1173.6814894668.

The spelling of 1616779395 in words is "one billion, six hundred sixteen million, seven hundred seventy-nine thousand, three hundred ninety-five".