1516161651 has 8 divisors (see below), whose sum is σ = 2022084240. Its totient is φ = 1010506752.

The previous prime is 1516161641. The next prime is 1516161653. The reversal of 1516161651 is 1561616151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1516161651 - 2²¹ = 1514064499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1516161653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53310 + ... + 76643.

It is an arithmetic number, because the mean of its divisors is an integer number (252760530).

Almost surely, 2^1516161651 is an apocalyptic number.

1516161651 is a deficient number, since it is larger than the sum of its proper divisors (505922589).

1516161651 is a wasteful number, since it uses less digits than its factorization.

1516161651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133845.

The product of its digits is 5400, while the sum is 33.

The square root of 1516161651 is about 38937.9204760604. The cubic root of 1516161651 is about 1148.8107809823.

The spelling of 1516161651 in words is "one billion, five hundred sixteen million, one hundred sixty-one thousand, six hundred fifty-one".