7254887138 has 8 divisors (see below), whose sum is σ = 11257583580. Its totient is φ = 3502359280.

The previous prime is 7254887137. The next prime is 7254887141. The reversal of 7254887138 is 8317884527.

It can be written as a sum of positive squares in 2 ways, for example, as 7092503089 + 162384049 = 84217^2 + 12743^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 7254887138.

It is not an unprimeable number, because it can be changed into a prime (7254887137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62542073 + ... + 62542188.

Almost surely, 2^7254887138 is an apocalyptic number.

7254887138 is a deficient number, since it is larger than the sum of its proper divisors (4002696442).

7254887138 is a wasteful number, since it uses less digits than its factorization.

7254887138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125084292.

The product of its digits is 3010560, while the sum is 53.

The square root of 7254887138 is about 85175.6252574644. The cubic root of 7254887138 is about 1935.8731078823.

The spelling of 7254887138 in words is "seven billion, two hundred fifty-four million, eight hundred eighty-seven thousand, one hundred thirty-eight".