1654417901 has 2 divisors, whose sum is σ = 1654417902. Its totient is φ = 1654417900.

The previous prime is 1654417871. The next prime is 1654417903. The reversal of 1654417901 is 1097144561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1453515625 + 200902276 = 38125^2 + 14174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1654417901 is a prime.

It is a super-2 number, since 2×1654417901² = 5474197182298491602, which contains 22 as substring.

Together with 1654417903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1654417903) 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 as a sum of consecutive naturals, namely, 827208950 + 827208951.

It is an arithmetic number, because the mean of its divisors is an integer number (827208951).

Almost surely, 2^1654417901 is an apocalyptic number.

It is an amenable number.

1654417901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1654417901 is an equidigital number, since it uses as much as digits as its factorization.

1654417901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1654417901 is about 40674.5362727100. The cubic root of 1654417901 is about 1182.7194534799.

The spelling of 1654417901 in words is "one billion, six hundred fifty-four million, four hundred seventeen thousand, nine hundred one".