2629866381 has 8 divisors (see below), whose sum is σ = 3541206624. Its totient is φ = 1735885200.

The previous prime is 2629866373. The next prime is 2629866433. The reversal of 2629866381 is 1836689262.

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

It is not a de Polignac number, because 2629866381 - 2³ = 2629866373 is a prime.

It is a super-2 number, since 2×2629866381² = 13832394363828074322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2629866181) 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, 4339411 + ... + 4340016.

It is an arithmetic number, because the mean of its divisors is an integer number (442650828).

Almost surely, 2^2629866381 is an apocalyptic number.

It is an amenable number.

2629866381 is a deficient number, since it is larger than the sum of its proper divisors (911340243).

2629866381 is a wasteful number, since it uses less digits than its factorization.

2629866381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8679531.

The product of its digits is 1492992, while the sum is 51.

The square root of 2629866381 is about 51282.2228554886. Note that the first 3 decimals coincide. The cubic root of 2629866381 is about 1380.3140048955.

The spelling of 2629866381 in words is "two billion, six hundred twenty-nine million, eight hundred sixty-six thousand, three hundred eighty-one".