2815340987 has 8 divisors (see below), whose sum is σ = 2844331776. Its totient is φ = 2786499072.

The previous prime is 2815340977. The next prime is 2815341019. The reversal of 2815340987 is 7890435182.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2815340987 - 2⁴ = 2815340971 is a prime.

It is a super-2 number, since 2×2815340987² = 15852289746164268338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2815340977) 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, 998 + ... + 75044.

It is an arithmetic number, because the mean of its divisors is an integer number (355541472).

Almost surely, 2^2815340987 is an apocalyptic number.

2815340987 is a deficient number, since it is larger than the sum of its proper divisors (28990789).

2815340987 is a wasteful number, since it uses less digits than its factorization.

2815340987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74437.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 2815340987 is about 53059.7869106162. The cubic root of 2815340987 is about 1412.0291671342.

The spelling of 2815340987 in words is "two billion, eight hundred fifteen million, three hundred forty thousand, nine hundred eighty-seven".