1149491715988 has 144 divisors (see below), whose sum is σ = 2708758293696. Its totient is φ = 420600714240.

The previous prime is 1149491715973. The next prime is 1149491716013. The reversal of 1149491715988 is 8895171949411.

It is a super-2 number, since 2×1149491715988² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17082906 + ... + 17150062.

It is an arithmetic number, because the mean of its divisors is an integer number (18810821484).

Almost surely, 2^{1149491715988} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1149491715988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354379146848).

1149491715988 is an abundant number, since it is smaller than the sum of its proper divisors (1559266577708).

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

1149491715988 is a wasteful number, since it uses less digits than its factorization.

1149491715988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67670 (or 67661 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 67.

The spelling of 1149491715988 in words is "one trillion, one hundred forty-nine billion, four hundred ninety-one million, seven hundred fifteen thousand, nine hundred eighty-eight".