1151921632 has 60 divisors (see below), whose sum is σ = 2415175056. Its totient is φ = 540823040.

The previous prime is 1151921597. The next prime is 1151921633. The reversal of 1151921632 is 2361291511.

It is a junction number, because it is equal to n+sod(n) for n = 1151921594 and 1151921603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151921633) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2672457 + ... + 2672887.

Almost surely, 2^1151921632 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 1151921632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1207587528).

1151921632 is an abundant number, since it is smaller than the sum of its proper divisors (1263253424).

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

1151921632 is an frugal number, since it uses more digits than its factorization.

1151921632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 450 counting only the distinct ones).

The product of its digits is 3240, while the sum is 31.

The square root of 1151921632 is about 33939.9710076482. The cubic root of 1151921632 is about 1048.2727860494.

The spelling of 1151921632 in words is "one billion, one hundred fifty-one million, nine hundred twenty-one thousand, six hundred thirty-two".