160987920290 has 16 divisors (see below), whose sum is σ = 295245771768. Its totient is φ = 63180164736.

The previous prime is 160987920221. The next prime is 160987920397. The reversal of 160987920290 is 92029789061.

It is a Cunningham number, because it is equal to 401233²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 160987920289 + 1 = 401233^2 + 1^2 .

It is a super-2 number, since 2×160987920290² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151874867 + ... + 151875926.

Almost surely, 2^160987920290 is an apocalyptic number.

160987920290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

160987920290 is a deficient number, since it is larger than the sum of its proper divisors (134257851478).

160987920290 is a wasteful number, since it uses less digits than its factorization.

160987920290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303750853.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 160987920290 in words is "one hundred sixty billion, nine hundred eighty-seven million, nine hundred twenty thousand, two hundred ninety".