2638144354 has 16 divisors (see below), whose sum is σ = 4192967808. Its totient is φ = 1240598592.

The previous prime is 2638144339. The next prime is 2638144381. The reversal of 2638144354 is 4534418362.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22387 + ... + 76009.

It is an arithmetic number, because the mean of its divisors is an integer number (262060488).

Almost surely, 2^2638144354 is an apocalyptic number.

2638144354 is a deficient number, since it is larger than the sum of its proper divisors (1554823454).

2638144354 is a wasteful number, since it uses less digits than its factorization.

2638144354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55089.

The product of its digits is 276480, while the sum is 40.

The square root of 2638144354 is about 51362.8694097205. The cubic root of 2638144354 is about 1381.7607494143.

The spelling of 2638144354 in words is "two billion, six hundred thirty-eight million, one hundred forty-four thousand, three hundred fifty-four".