1540085292 has 24 divisors (see below), whose sum is σ = 3992814000. Its totient is φ = 513361728.

The previous prime is 1540085263. The next prime is 1540085293. The reversal of 1540085292 is 2925800451.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1540085293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7129917 + ... + 7130132.

It is an arithmetic number, because the mean of its divisors is an integer number (166367250).

Almost surely, 2^1540085292 is an apocalyptic number.

1540085292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1540085292 is an abundant number, since it is smaller than the sum of its proper divisors (2452728708).

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

1540085292 is a wasteful number, since it uses less digits than its factorization.

1540085292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14260062 (or 14260054 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1540085292 is about 39243.9204463570. The cubic root of 1540085292 is about 1154.8216692121.

The spelling of 1540085292 in words is "one billion, five hundred forty million, eighty-five thousand, two hundred ninety-two".