2151239002 has 32 divisors (see below), whose sum is σ = 3663221760. Its totient is φ = 938883120.

The previous prime is 2151238997. The next prime is 2151239003. The reversal of 2151239002 is 2009321512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2151239003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36543 + ... + 75085.

It is an arithmetic number, because the mean of its divisors is an integer number (114475680).

Almost surely, 2^2151239002 is an apocalyptic number.

2151239002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2151239002 is a deficient number, since it is larger than the sum of its proper divisors (1511982758).

2151239002 is a wasteful number, since it uses less digits than its factorization.

2151239002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38658.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2151239002 is about 46381.4510553519. The cubic root of 2151239002 is about 1290.9107607990.

The spelling of 2151239002 in words is "two billion, one hundred fifty-one million, two hundred thirty-nine thousand, two".