1553938546 has 16 divisors (see below), whose sum is σ = 2370513600. Its totient is φ = 763876368.

The previous prime is 1553938537. The next prime is 1553938549. The reversal of 1553938546 is 6458393551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1553938546.

It is not an unprimeable number, because it can be changed into a prime (1553938549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500 + ... + 55768.

It is an arithmetic number, because the mean of its divisors is an integer number (148157100).

Almost surely, 2^1553938546 is an apocalyptic number.

1553938546 is a deficient number, since it is larger than the sum of its proper divisors (816575054).

1553938546 is a wasteful number, since it uses less digits than its factorization.

1553938546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54513.

The product of its digits is 1944000, while the sum is 49.

The square root of 1553938546 is about 39420.0272196760. The cubic root of 1553938546 is about 1158.2739256502.

The spelling of 1553938546 in words is "one billion, five hundred fifty-three million, nine hundred thirty-eight thousand, five hundred forty-six".