1189472490 has 48 divisors (see below), whose sum is σ = 3274552008. Its totient is φ = 298533888.

The previous prime is 1189472483. The next prime is 1189472519. The reversal of 1189472490 is 942749811.

It is a happy number.

1189472490 is a `hidden beast` number, since 1 + 1 + 8 + 94 + 72 + 490 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1149820281 + 39652209 = 33909^2 + 6297^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 387187 + ... + 390246.

Almost surely, 2^1189472490 is an apocalyptic number.

1189472490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1189472490 is an abundant number, since it is smaller than the sum of its proper divisors (2085079518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1189472490 is a wasteful number, since it uses less digits than its factorization.

1189472490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777463 (or 777460 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1189472490 is about 34488.7298983306. The cubic root of 1189472490 is about 1059.5418959130.

The spelling of 1189472490 in words is "one billion, one hundred eighty-nine million, four hundred seventy-two thousand, four hundred ninety".