1913703497 has 2 divisors, whose sum is σ = 1913703498. Its totient is φ = 1913703496.

The previous prime is 1913703487. The next prime is 1913703509. The reversal of 1913703497 is 7943073191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1424232121 + 489471376 = 37739^2 + 22124^2 .

It is a cyclic number.

It is not a de Polignac number, because 1913703497 - 2¹⁶ = 1913637961 is a prime.

It is a super-2 number, since 2×1913703497² = 7324522148860058018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1913703487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956851748 + 956851749.

It is an arithmetic number, because the mean of its divisors is an integer number (956851749).

Almost surely, 2^1913703497 is an apocalyptic number.

It is an amenable number.

1913703497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913703497 is an equidigital number, since it uses as much as digits as its factorization.

1913703497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 1913703497 is about 43745.8969161680. The cubic root of 1913703497 is about 1241.5328548220.

The spelling of 1913703497 in words is "one billion, nine hundred thirteen million, seven hundred three thousand, four hundred ninety-seven".