1554536641 has 8 divisors (see below), whose sum is σ = 1799102720. Its totient is φ = 1315592928.

The previous prime is 1554536639. The next prime is 1554536657. The reversal of 1554536641 is 1466354551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1554536641 - 2¹ = 1554536639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1554536594 and 1554536603.

It is not an unprimeable number, because it can be changed into a prime (1554536741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1404996 + ... + 1406101.

It is an arithmetic number, because the mean of its divisors is an integer number (224887840).

Almost surely, 2^1554536641 is an apocalyptic number.

It is an amenable number.

1554536641 is a deficient number, since it is larger than the sum of its proper divisors (244566079).

1554536641 is an equidigital number, since it uses as much as digits as its factorization.

1554536641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811183.

The product of its digits is 216000, while the sum is 40.

The square root of 1554536641 is about 39427.6126718319. The cubic root of 1554536641 is about 1158.4225091717.

The spelling of 1554536641 in words is "one billion, five hundred fifty-four million, five hundred thirty-six thousand, six hundred forty-one".