1541399532 has 48 divisors (see below), whose sum is σ = 3756829440. Its totient is φ = 491254848.

The previous prime is 1541399513. The next prime is 1541399581. The reversal of 1541399532 is 2359931451.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14343 + ... + 57345.

It is an arithmetic number, because the mean of its divisors is an integer number (78267280).

Almost surely, 2^1541399532 is an apocalyptic number.

1541399532 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 1541399532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1878414720).

1541399532 is an abundant number, since it is smaller than the sum of its proper divisors (2215429908).

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

1541399532 is a wasteful number, since it uses less digits than its factorization.

1541399532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43142 (or 43140 counting only the distinct ones).

The product of its digits is 145800, while the sum is 42.

The square root of 1541399532 is about 39260.6613800634. The cubic root of 1541399532 is about 1155.1500668939.

The spelling of 1541399532 in words is "one billion, five hundred forty-one million, three hundred ninety-nine thousand, five hundred thirty-two".