1610920851 has 12 divisors (see below), whose sum is σ = 2245343688. Its totient is φ = 1027252864.

The previous prime is 1610920841. The next prime is 1610920889. The reversal of 1610920851 is 1580290161.

It is not a de Polignac number, because 1610920851 - 2⁵ = 1610920819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1610920841) 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, 505950 + ... + 509123.

It is an arithmetic number, because the mean of its divisors is an integer number (187111974).

Almost surely, 2^1610920851 is an apocalyptic number.

1610920851 is a deficient number, since it is larger than the sum of its proper divisors (634422837).

1610920851 is a wasteful number, since it uses less digits than its factorization.

1610920851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015122 (or 1015099 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 1610920851 is about 40136.2784896657. The cubic root of 1610920851 is about 1172.2621272513.

The spelling of 1610920851 in words is "one billion, six hundred ten million, nine hundred twenty thousand, eight hundred fifty-one".