1189925138 has 8 divisors (see below), whose sum is σ = 1798513200. Its totient is φ = 590420740.

The previous prime is 1189925123. The next prime is 1189925189. The reversal of 1189925138 is 8315299811.

It is a happy number.

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 = 1189925092 and 1189925101.

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, 2270588 + ... + 2271111.

It is an arithmetic number, because the mean of its divisors is an integer number (224814150).

Almost surely, 2^1189925138 is an apocalyptic number.

1189925138 is a deficient number, since it is larger than the sum of its proper divisors (608588062).

1189925138 is a wasteful number, since it uses less digits than its factorization.

1189925138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541832.

The product of its digits is 155520, while the sum is 47.

The square root of 1189925138 is about 34495.2915337731. The cubic root of 1189925138 is about 1059.6762800484.

The spelling of 1189925138 in words is "one billion, one hundred eighty-nine million, nine hundred twenty-five thousand, one hundred thirty-eight".