1189249156 has 24 divisors (see below), whose sum is σ = 2151104256. Its totient is φ = 574697760.

The previous prime is 1189249147. The next prime is 1189249163. The reversal of 1189249156 is 6519429811.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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, 96750 + ... + 108346.

It is an arithmetic number, because the mean of its divisors is an integer number (89629344).

Almost surely, 2^1189249156 is an apocalyptic number.

It is an amenable number.

1189249156 is a deficient number, since it is larger than the sum of its proper divisors (961855100).

1189249156 is a wasteful number, since it uses less digits than its factorization.

1189249156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12459 (or 12457 counting only the distinct ones).

The product of its digits is 155520, while the sum is 46.

The square root of 1189249156 is about 34485.4919640129. The cubic root of 1189249156 is about 1059.4755789690.

The spelling of 1189249156 in words is "one billion, one hundred eighty-nine million, two hundred forty-nine thousand, one hundred fifty-six".