151861473 has 10 divisors (see below), whose sum is σ = 226854914. Its totient is φ = 101240928.

The previous prime is 151861399. The next prime is 151861481. The reversal of 151861473 is 374168151.

151861473 is a `hidden beast` number, since 1 + 5 + 186 + 1 + 473 = 666.

It can be written as a sum of positive squares in only one way, i.e., 115283169 + 36578304 = 10737^2 + 6048^2 .

It is not a de Polignac number, because 151861473 - 2¹³ = 151853281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151861373) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 937336 + ... + 937497.

Almost surely, 2^151861473 is an apocalyptic number.

It is an amenable number.

151861473 is a deficient number, since it is larger than the sum of its proper divisors (74993441).

151861473 is an equidigital number, since it uses as much as digits as its factorization.

151861473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874845 (or 1874836 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 151861473 is about 12323.2087136427. The cubic root of 151861473 is about 533.5181551717.

The spelling of 151861473 in words is "one hundred fifty-one million, eight hundred sixty-one thousand, four hundred seventy-three".