2951257987 has 8 divisors (see below), whose sum is σ = 3125444400. Its totient is φ = 2777136384.

The previous prime is 2951257931. The next prime is 2951257999. The reversal of 2951257987 is 7897521592.

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 2951257987 - 2¹¹ = 2951255939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2951252987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102439 + ... + 128047.

It is an arithmetic number, because the mean of its divisors is an integer number (390680550).

Almost surely, 2^2951257987 is an apocalyptic number.

2951257987 is a deficient number, since it is larger than the sum of its proper divisors (174186413).

2951257987 is a wasteful number, since it uses less digits than its factorization.

2951257987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32405.

The product of its digits is 3175200, while the sum is 55.

The square root of 2951257987 is about 54325.4819306741. The cubic root of 2951257987 is about 1434.3959768954.

The spelling of 2951257987 in words is "two billion, nine hundred fifty-one million, two hundred fifty-seven thousand, nine hundred eighty-seven".