1697038493 has 2 divisors, whose sum is σ = 1697038494. Its totient is φ = 1697038492.

The previous prime is 1697038471. The next prime is 1697038507. The reversal of 1697038493 is 3948307961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1031501689 + 665536804 = 32117^2 + 25798^2 .

It is a cyclic number.

It is not a de Polignac number, because 1697038493 - 2¹² = 1697034397 is a prime.

It is a super-2 number, since 2×1697038493² = 5759879293447422098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1697038433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 848519246 + 848519247.

It is an arithmetic number, because the mean of its divisors is an integer number (848519247).

Almost surely, 2^1697038493 is an apocalyptic number.

It is an amenable number.

1697038493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1697038493 is an equidigital number, since it uses as much as digits as its factorization.

1697038493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 1697038493 is about 41195.1270540582. The cubic root of 1697038493 is about 1192.7897481506.

The spelling of 1697038493 in words is "one billion, six hundred ninety-seven million, thirty-eight thousand, four hundred ninety-three".