1542867646 has 24 divisors (see below), whose sum is σ = 2425351824. Its totient is φ = 736047840.

The previous prime is 1542867643. The next prime is 1542867707. The reversal of 1542867646 is 6467682451.

It is a self number, because there is not a number n which added to its sum of digits gives 1542867646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542867643) 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, 481911 + ... + 485101.

It is an arithmetic number, because the mean of its divisors is an integer number (101056326).

Almost surely, 2^1542867646 is an apocalyptic number.

1542867646 is a deficient number, since it is larger than the sum of its proper divisors (882484178).

1542867646 is a wasteful number, since it uses less digits than its factorization.

1542867646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3696 (or 3673 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The square root of 1542867646 is about 39279.3539407155. The cubic root of 1542867646 is about 1155.5166934162.

The spelling of 1542867646 in words is "one billion, five hundred forty-two million, eight hundred sixty-seven thousand, six hundred forty-six".