1170991458 has 128 divisors (see below), whose sum is σ = 3306455040. Its totient is φ = 298831680.

The previous prime is 1170991439. The next prime is 1170991499. The reversal of 1170991458 is 8541990711.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 148491 + ... + 156177.

It is an arithmetic number, because the mean of its divisors is an integer number (25831680).

Almost surely, 2^1170991458 is an apocalyptic number.

1170991458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1170991458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653227520).

1170991458 is an abundant number, since it is smaller than the sum of its proper divisors (2135463582).

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

1170991458 is a wasteful number, since it uses less digits than its factorization.

1170991458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7749 (or 7743 counting only the distinct ones).

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

The square root of 1170991458 is about 34219.7524538095. The cubic root of 1170991458 is about 1054.0258020993.

The spelling of 1170991458 in words is "one billion, one hundred seventy million, nine hundred ninety-one thousand, four hundred fifty-eight".