1201564453 has 12 divisors (see below), whose sum is σ = 1262016288. Its totient is φ = 1143734480.

The previous prime is 1201564423. The next prime is 1201564493. The reversal of 1201564453 is 3544651021.

It is a happy number.

It is not a de Polignac number, because 1201564453 - 2⁵ = 1201564421 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 (1201564423) 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 11 ways as a sum of consecutive naturals, for example, 49650 + ... + 69772.

It is an arithmetic number, because the mean of its divisors is an integer number (105168024).

Almost surely, 2^1201564453 is an apocalyptic number.

It is an amenable number.

1201564453 is a deficient number, since it is larger than the sum of its proper divisors (60451835).

1201564453 is an equidigital number, since it uses as much as digits as its factorization.

1201564453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20252 (or 20223 counting only the distinct ones).

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

The square root of 1201564453 is about 34663.5897304362. The cubic root of 1201564453 is about 1063.1201684729.

It can be divided in two parts, 120156 and 4453, that added together give a square (124609 = 353²).

The spelling of 1201564453 in words is "one billion, two hundred one million, five hundred sixty-four thousand, four hundred fifty-three".