2649000381 has 8 divisors (see below), whose sum is σ = 3537959040. Its totient is φ = 1763020992.

The previous prime is 2649000379. The next prime is 2649000383. The reversal of 2649000381 is 1830009462.

It is an interprime number because it is at equal distance from previous prime (2649000379) and next prime (2649000383).

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

It is not a de Polignac number, because 2649000381 - 2¹ = 2649000379 is a prime.

It is a super-2 number, since 2×2649000381² = 14034406037076290322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649000383) 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, 742741 + ... + 746298.

It is an arithmetic number, because the mean of its divisors is an integer number (442244880).

Almost surely, 2^2649000381 is an apocalyptic number.

2649000381 is the 32552-nd centered pentagonal number.

It is an amenable number.

2649000381 is a deficient number, since it is larger than the sum of its proper divisors (888958659).

2649000381 is a wasteful number, since it uses less digits than its factorization.

2649000381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489635.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 2649000381 is about 51468.4406311285. The cubic root of 2649000381 is about 1383.6534817280.

The spelling of 2649000381 in words is "two billion, six hundred forty-nine million, three hundred eighty-one", and thus it is an aban number.