1138707578 has 8 divisors (see below), whose sum is σ = 1711918368. Its totient is φ = 568068124.

The previous prime is 1138707547. The next prime is 1138707607. The reversal of 1138707578 is 8757078311.

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

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, 641726 + ... + 643497.

It is an arithmetic number, because the mean of its divisors is an integer number (213989796).

Almost surely, 2^1138707578 is an apocalyptic number.

1138707578 is a deficient number, since it is larger than the sum of its proper divisors (573210790).

1138707578 is a wasteful number, since it uses less digits than its factorization.

1138707578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285668.

The product of its (nonzero) digits is 329280, while the sum is 47.

The square root of 1138707578 is about 33744.7414866376. The cubic root of 1138707578 is about 1044.2490053817.

The spelling of 1138707578 in words is "one billion, one hundred thirty-eight million, seven hundred seven thousand, five hundred seventy-eight".