1473949991 has 2 divisors, whose sum is σ = 1473949992. Its totient is φ = 1473949990.

The previous prime is 1473949957. The next prime is 1473949999. The reversal of 1473949991 is 1999493741.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1473949991 - 2⁶ = 1473949927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1473949999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 736974995 + 736974996.

It is an arithmetic number, because the mean of its divisors is an integer number (736974996).

Almost surely, 2^1473949991 is an apocalyptic number.

1473949991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1473949991 is an equidigital number, since it uses as much as digits as its factorization.

1473949991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 56.

The square root of 1473949991 is about 38392.0563528447. The cubic root of 1473949991 is about 1138.0488814389.

The spelling of 1473949991 in words is "one billion, four hundred seventy-three million, nine hundred forty-nine thousand, nine hundred ninety-one".