1553140642 has 16 divisors (see below), whose sum is σ = 2470859712. Its totient is φ = 730627920.

The previous prime is 1553140613. The next prime is 1553140649. The reversal of 1553140642 is 2460413551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1553140649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273948 + ... + 279559.

It is an arithmetic number, because the mean of its divisors is an integer number (154428732).

Almost surely, 2^1553140642 is an apocalyptic number.

1553140642 is a deficient number, since it is larger than the sum of its proper divisors (917719070).

1553140642 is a wasteful number, since it uses less digits than its factorization.

1553140642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553593.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1553140642 is about 39409.9053792318. The cubic root of 1553140642 is about 1158.0756446161.

The spelling of 1553140642 in words is "one billion, five hundred fifty-three million, one hundred forty thousand, six hundred forty-two".