2351451540 has 24 divisors (see below), whose sum is σ = 6584064480. Its totient is φ = 627053728.

The previous prime is 2351451523. The next prime is 2351451547. The reversal of 2351451540 is 451541532.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2351451498 and 2351451507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2351451547) 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, 19595370 + ... + 19595489.

It is an arithmetic number, because the mean of its divisors is an integer number (274336020).

Almost surely, 2^2351451540 is an apocalyptic number.

2351451540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2351451540 is an abundant number, since it is smaller than the sum of its proper divisors (4232612940).

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

2351451540 is a wasteful number, since it uses less digits than its factorization.

2351451540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39190871 (or 39190869 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2351451540 is about 48491.7677549499. The cubic root of 2351451540 is about 1329.7765731683.

The spelling of 2351451540 in words is "two billion, three hundred fifty-one million, four hundred fifty-one thousand, five hundred forty".