2151840970 has 8 divisors (see below), whose sum is σ = 3873313764. Its totient is φ = 860736384.

The previous prime is 2151840917. The next prime is 2151840989. The reversal of 2151840970 is 790481512.

It can be written as a sum of positive squares in 2 ways, for example, as 2106534609 + 45306361 = 45897^2 + 6731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107592039 + ... + 107592058.

Almost surely, 2^2151840970 is an apocalyptic number.

2151840970 is a deficient number, since it is larger than the sum of its proper divisors (1721472794).

2151840970 is a wasteful number, since it uses less digits than its factorization.

2151840970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215184104.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 2151840970 is about 46387.9399197679. The cubic root of 2151840970 is about 1291.0311587800.

The spelling of 2151840970 in words is "two billion, one hundred fifty-one million, eight hundred forty thousand, nine hundred seventy".