2251370638 has 8 divisors (see below), whose sum is σ = 3684061080. Its totient is φ = 1023350280.

The previous prime is 2251370621. The next prime is 2251370689. The reversal of 2251370638 is 8360731522.

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

It is a junction number, because it is equal to n+sod(n) for n = 2251370597 and 2251370606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51167493 + ... + 51167536.

It is an arithmetic number, because the mean of its divisors is an integer number (460507635).

Almost surely, 2^2251370638 is an apocalyptic number.

2251370638 is a deficient number, since it is larger than the sum of its proper divisors (1432690442).

2251370638 is a wasteful number, since it uses less digits than its factorization.

2251370638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102335042.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 2251370638 is about 47448.6104959882. The cubic root of 2251370638 is about 1310.6367236666.

The spelling of 2251370638 in words is "two billion, two hundred fifty-one million, three hundred seventy thousand, six hundred thirty-eight".