2865992381 has 8 divisors (see below), whose sum is σ = 3275909760. Its totient is φ = 2456197488.

The previous prime is 2865992351. The next prime is 2865992399. The reversal of 2865992381 is 1832995682.

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 2865992381 - 2¹⁰ = 2865991357 is a prime.

It is a super-2 number, since 2×2865992381² = 16427824655900098322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2865992351) 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, 26675 + ... + 80271.

It is an arithmetic number, because the mean of its divisors is an integer number (409488720).

Almost surely, 2^2865992381 is an apocalyptic number.

It is an amenable number.

2865992381 is a deficient number, since it is larger than the sum of its proper divisors (409917379).

2865992381 is an equidigital number, since it uses as much as digits as its factorization.

2865992381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61243.

The product of its digits is 1866240, while the sum is 53.

The square root of 2865992381 is about 53534.9640982414. The cubic root of 2865992381 is about 1420.4469235627.

The spelling of 2865992381 in words is "two billion, eight hundred sixty-five million, nine hundred ninety-two thousand, three hundred eighty-one".