1403481491 has 2 divisors, whose sum is σ = 1403481492. Its totient is φ = 1403481490.

The previous prime is 1403481451. The next prime is 1403481503. The reversal of 1403481491 is 1941843041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1403481491 - 2²⁶ = 1336372627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1403481451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701740745 + 701740746.

It is an arithmetic number, because the mean of its divisors is an integer number (701740746).

Almost surely, 2^1403481491 is an apocalyptic number.

1403481491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1403481491 is an equidigital number, since it uses as much as digits as its factorization.

1403481491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1403481491 is about 37463.0683607203. The cubic root of 1403481491 is about 1119.6154852986.

The spelling of 1403481491 in words is "one billion, four hundred three million, four hundred eighty-one thousand, four hundred ninety-one".