1654131623 has 2 divisors, whose sum is σ = 1654131624. Its totient is φ = 1654131622.

The previous prime is 1654131617. The next prime is 1654131649. The reversal of 1654131623 is 3261314561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1654131623 - 2⁶ = 1654131559 is a prime.

It is a super-2 number, since 2×1654131623² = 5472302852417228258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1654131623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1654131653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827065811 + 827065812.

It is an arithmetic number, because the mean of its divisors is an integer number (827065812).

Almost surely, 2^1654131623 is an apocalyptic number.

1654131623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1654131623 is an equidigital number, since it uses as much as digits as its factorization.

1654131623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 1654131623 is about 40671.0169899893. The cubic root of 1654131623 is about 1182.6512308760.

The spelling of 1654131623 in words is "one billion, six hundred fifty-four million, one hundred thirty-one thousand, six hundred twenty-three".