1403655641 has 2 divisors, whose sum is σ = 1403655642. Its totient is φ = 1403655640.

The previous prime is 1403655629. The next prime is 1403655691. The reversal of 1403655641 is 1465563041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1097265625 + 306390016 = 33125^2 + 17504^2 .

It is a cyclic number.

It is not a de Polignac number, because 1403655641 - 2²² = 1399461337 is a prime.

It is a super-2 number, since 2×1403655641² = 3940498317022241762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1403655601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701827820 + 701827821.

It is an arithmetic number, because the mean of its divisors is an integer number (701827821).

Almost surely, 2^1403655641 is an apocalyptic number.

It is an amenable number.

1403655641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1403655641 is an equidigital number, since it uses as much as digits as its factorization.

1403655641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1403655641 is about 37465.3925776843. The cubic root of 1403655641 is about 1119.6617922797.

The spelling of 1403655641 in words is "one billion, four hundred three million, six hundred fifty-five thousand, six hundred forty-one".