3149477687 has 4 divisors (see below), whose sum is σ = 3168799800. Its totient is φ = 3130155576.

The previous prime is 3149477663. The next prime is 3149477693. The reversal of 3149477687 is 7867749413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3149477687 - 2⁶ = 3149477623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3149471687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9660812 + ... + 9661137.

It is an arithmetic number, because the mean of its divisors is an integer number (792199950).

Almost surely, 2^3149477687 is an apocalyptic number.

3149477687 is a deficient number, since it is larger than the sum of its proper divisors (19322113).

3149477687 is a wasteful number, since it uses less digits than its factorization.

3149477687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19322112.

The product of its digits is 7112448, while the sum is 56.

The square root of 3149477687 is about 56120.2074746699. The cubic root of 3149477687 is about 1465.8161824770.

The spelling of 3149477687 in words is "three billion, one hundred forty-nine million, four hundred seventy-seven thousand, six hundred eighty-seven".