1185197490 has 48 divisors (see below), whose sum is σ = 3101956416. Its totient is φ = 313956000.

The previous prime is 1185197473. The next prime is 1185197509. The reversal of 1185197490 is 947915811.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30016 + ... + 57195.

It is an arithmetic number, because the mean of its divisors is an integer number (64624092).

Almost surely, 2^1185197490 is an apocalyptic number.

1185197490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1185197490 is an abundant number, since it is smaller than the sum of its proper divisors (1916758926).

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

1185197490 is a wasteful number, since it uses less digits than its factorization.

1185197490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87375 (or 87372 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The square root of 1185197490 is about 34426.6973437767. The cubic root of 1185197490 is about 1058.2710303429.

The spelling of 1185197490 in words is "one billion, one hundred eighty-five million, one hundred ninety-seven thousand, four hundred ninety".