1189157230 has 16 divisors (see below), whose sum is σ = 2141010144. Its totient is φ = 475545760.

The previous prime is 1189157183. The next prime is 1189157239. The reversal of 1189157230 is 327519811.

It is a super-2 number, since 2×1189157230² = 2828189835322545800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1189157230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189157239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36504 + ... + 60916.

It is an arithmetic number, because the mean of its divisors is an integer number (133813134).

Almost surely, 2^1189157230 is an apocalyptic number.

1189157230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1189157230 is a deficient number, since it is larger than the sum of its proper divisors (951852914).

1189157230 is a wasteful number, since it uses less digits than its factorization.

1189157230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29291.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 1189157230 is about 34484.1591169047. The cubic root of 1189157230 is about 1059.4482799905.

The spelling of 1189157230 in words is "one billion, one hundred eighty-nine million, one hundred fifty-seven thousand, two hundred thirty".