1542868992 has 208 divisors, whose sum is σ = 5226513280. Its totient is φ = 440598528.

The previous prime is 1542868981. The next prime is 1542868993. The reversal of 1542868992 is 2998682451.

It is a happy number.

1542868992 is a `hidden beast` number, since 1 + 542 + 8 + 6 + 8 + 9 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542868993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 773148 + ... + 775140.

Almost surely, 2^1542868992 is an apocalyptic number.

1542868992 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 1542868992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2613256640).

1542868992 is an abundant number, since it is smaller than the sum of its proper divisors (3683644288).

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

1542868992 is an equidigital number, since it uses as much as digits as its factorization.

1542868992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033 (or 2005 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 1542868992 is about 39279.3710743948. The cubic root of 1542868992 is about 1155.5170294410.

The spelling of 1542868992 in words is "one billion, five hundred forty-two million, eight hundred sixty-eight thousand, nine hundred ninety-two".