1361453653 has 16 divisors (see below), whose sum is σ = 1682532864. Its totient is φ = 1074942720.

The previous prime is 1361453647. The next prime is 1361453663. The reversal of 1361453653 is 3563541631.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1361453653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361453663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116118 + ... + 127303.

It is an arithmetic number, because the mean of its divisors is an integer number (105158304).

Almost surely, 2^1361453653 is an apocalyptic number.

It is an amenable number.

1361453653 is a deficient number, since it is larger than the sum of its proper divisors (321079211).

1361453653 is a wasteful number, since it uses less digits than its factorization.

1361453653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243492.

The product of its digits is 97200, while the sum is 37.

The square root of 1361453653 is about 36897.8814161464. The cubic root of 1361453653 is about 1108.3262529909.

The spelling of 1361453653 in words is "one billion, three hundred sixty-one million, four hundred fifty-three thousand, six hundred fifty-three".