1516842261 has 16 divisors (see below), whose sum is σ = 2451462720. Its totient is φ = 919298160.

The previous prime is 1516842251. The next prime is 1516842281. The reversal of 1516842261 is 1622486151.

It is a happy number.

1516842261 is a `hidden beast` number, since 1 + 516 + 84 + 2 + 2 + 61 = 666.

It is not a de Polignac number, because 1516842261 - 2²² = 1512647957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516842251) 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, 2553310 + ... + 2553903.

It is an arithmetic number, because the mean of its divisors is an integer number (153216420).

Almost surely, 2^1516842261 is an apocalyptic number.

1516842261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1516842261 is a deficient number, since it is larger than the sum of its proper divisors (934620459).

1516842261 is a wasteful number, since it uses less digits than its factorization.

1516842261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5107233 (or 5107227 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1516842261 is about 38946.6591763658. The cubic root of 1516842261 is about 1148.9826569245.

The spelling of 1516842261 in words is "one billion, five hundred sixteen million, eight hundred forty-two thousand, two hundred sixty-one".