1542977964 has 144 divisors (see below), whose sum is σ = 4461649920. Its totient is φ = 460706400.

The previous prime is 1542977957. The next prime is 1542978001. The reversal of 1542977964 is 4697792451.

1542977964 is a `hidden beast` number, since 1 + 542 + 9 + 7 + 7 + 96 + 4 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1542977964.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 926997 + ... + 928659.

It is an arithmetic number, because the mean of its divisors is an integer number (30983680).

Almost surely, 2^1542977964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1542977964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2230824960).

1542977964 is an abundant number, since it is smaller than the sum of its proper divisors (2918671956).

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

1542977964 is a wasteful number, since it uses less digits than its factorization.

1542977964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769 (or 1750 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 1542977964 is about 39280.7581902386. The cubic root of 1542977964 is about 1155.5442333142.

It can be divided in two parts, 154297 and 7964, that added together give a palindrome (162261).

The spelling of 1542977964 in words is "one billion, five hundred forty-two million, nine hundred seventy-seven thousand, nine hundred sixty-four".