2638741551 has 8 divisors (see below), whose sum is σ = 3518739840. Its totient is φ = 1758952152.

The previous prime is 2638741531. The next prime is 2638741583. The reversal of 2638741551 is 1551478362.

It is a happy number.

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

It is not a de Polignac number, because 2638741551 - 2⁶ = 2638741487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638741531) 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, 19885 + ... + 75318.

It is an arithmetic number, because the mean of its divisors is an integer number (439842480).

Almost surely, 2^2638741551 is an apocalyptic number.

2638741551 is a deficient number, since it is larger than the sum of its proper divisors (879998289).

2638741551 is an equidigital number, since it uses as much as digits as its factorization.

2638741551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104445.

The product of its digits is 201600, while the sum is 42.

The square root of 2638741551 is about 51368.6825896869. The cubic root of 2638741551 is about 1381.8650046541.

The spelling of 2638741551 in words is "two billion, six hundred thirty-eight million, seven hundred forty-one thousand, five hundred fifty-one".