2151064740 has 96 divisors (see below), whose sum is σ = 6957062784. Its totient is φ = 490792960.

The previous prime is 2151064733. The next prime is 2151064753. The reversal of 2151064740 is 474601512.

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 = 2151064698 and 2151064707.

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 31 ways as a sum of consecutive naturals, for example, 84639 + ... + 107078.

It is an arithmetic number, because the mean of its divisors is an integer number (72469404).

Almost surely, 2^2151064740 is an apocalyptic number.

2151064740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151064740 is an abundant number, since it is smaller than the sum of its proper divisors (4805998044).

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

2151064740 is a wasteful number, since it uses less digits than its factorization.

2151064740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191757 (or 191755 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2151064740 is about 46379.5724430487. The cubic root of 2151064740 is about 1290.8759029387.

The spelling of 2151064740 in words is "two billion, one hundred fifty-one million, sixty-four thousand, seven hundred forty".