1540454952 has 48 divisors (see below), whose sum is σ = 3947461920. Its totient is φ = 500947840.

The previous prime is 1540454947. The next prime is 1540454959. The reversal of 1540454952 is 2594540451.

It is a self number, because there is not a number n which added to its sum of digits gives 1540454952.

It is not an unprimeable number, because it can be changed into a prime (1540454959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21253 + ... + 59435.

It is an arithmetic number, because the mean of its divisors is an integer number (82238790).

Almost surely, 2^1540454952 is an apocalyptic number.

1540454952 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 1540454952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1973730960).

1540454952 is an abundant number, since it is smaller than the sum of its proper divisors (2407006968).

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

1540454952 is a wasteful number, since it uses less digits than its factorization.

1540454952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38274 (or 38229 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 1540454952 is about 39248.6299378717. The cubic root of 1540454952 is about 1154.9140574346.

The spelling of 1540454952 in words is "one billion, five hundred forty million, four hundred fifty-four thousand, nine hundred fifty-two".