1533399340 has 48 divisors (see below), whose sum is σ = 3533271840. Its totient is φ = 554362880.

The previous prime is 1533399317. The next prime is 1533399349. The reversal of 1533399340 is 439933351.

It is a junction number, because it is equal to n+sod(n) for n = 1533399293 and 1533399302.

It is not an unprimeable number, because it can be changed into a prime (1533399349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17916 + ... + 58204.

It is an arithmetic number, because the mean of its divisors is an integer number (73609830).

Almost surely, 2^1533399340 is an apocalyptic number.

1533399340 is a gapful number since it is divisible by the number (10) 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 1533399340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1766635920).

1533399340 is an abundant number, since it is smaller than the sum of its proper divisors (1999872500).

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

1533399340 is a wasteful number, since it uses less digits than its factorization.

1533399340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40482 (or 40480 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 40.

The square root of 1533399340 is about 39158.6432349232. The cubic root of 1533399340 is about 1153.1481076981.

The spelling of 1533399340 in words is "one billion, five hundred thirty-three million, three hundred ninety-nine thousand, three hundred forty".