2761972387 has 4 divisors (see below), whose sum is σ = 2764647160. Its totient is φ = 2759297616.

The previous prime is 2761972357. The next prime is 2761972391. The reversal of 2761972387 is 7832791672.

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 2761972387 - 2³¹ = 614488739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2761972307) 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 3 ways as a sum of consecutive naturals, for example, 1335837 + ... + 1337902.

It is an arithmetic number, because the mean of its divisors is an integer number (691161790).

Almost surely, 2^2761972387 is an apocalyptic number.

2761972387 is a deficient number, since it is larger than the sum of its proper divisors (2674773).

2761972387 is a wasteful number, since it uses less digits than its factorization.

2761972387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674772.

The product of its digits is 1778112, while the sum is 52.

The square root of 2761972387 is about 52554.4706661574. The cubic root of 2761972387 is about 1403.0498794590.

The spelling of 2761972387 in words is "two billion, seven hundred sixty-one million, nine hundred seventy-two thousand, three hundred eighty-seven".