1148657172 has 72 divisors (see below), whose sum is σ = 3002459040. Its totient is φ = 341228160.

The previous prime is 1148657149. The next prime is 1148657197. The reversal of 1148657172 is 2717568411.

It is a congruent number.

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, 49047 + ... + 68577.

It is an arithmetic number, because the mean of its divisors is an integer number (41700820).

Almost surely, 2^1148657172 is an apocalyptic number.

1148657172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1148657172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1501229520).

1148657172 is an abundant number, since it is smaller than the sum of its proper divisors (1853801868).

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

1148657172 is a wasteful number, since it uses less digits than its factorization.

1148657172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19593 (or 19578 counting only the distinct ones).

The product of its digits is 94080, while the sum is 42.

The square root of 1148657172 is about 33891.8452138564. The cubic root of 1148657172 is about 1047.2816068495.

The spelling of 1148657172 in words is "one billion, one hundred forty-eight million, six hundred fifty-seven thousand, one hundred seventy-two".