2351191840 has 48 divisors (see below), whose sum is σ = 5683886208. Its totient is φ = 918602496.

The previous prime is 2351191837. The next prime is 2351191861. The reversal of 2351191840 is 481911532.

It is a junction number, because it is equal to n+sod(n) for n = 2351191796 and 2351191805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163992 + ... + 177751.

It is an arithmetic number, because the mean of its divisors is an integer number (118414296).

Almost surely, 2^2351191840 is an apocalyptic number.

2351191840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2351191840 is an abundant number, since it is smaller than the sum of its proper divisors (3332694368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2351191840 is a wasteful number, since it uses less digits than its factorization.

2351191840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341801 (or 341793 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 2351191840 is about 48489.0899069059. The cubic root of 2351191840 is about 1329.7276167848.

The spelling of 2351191840 in words is "two billion, three hundred fifty-one million, one hundred ninety-one thousand, eight hundred forty".