1947080497 has 2 divisors, whose sum is σ = 1947080498. Its totient is φ = 1947080496.

The previous prime is 1947080459. The next prime is 1947080507. The reversal of 1947080497 is 7940807491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1278134001 + 668946496 = 35751^2 + 25864^2 .

It is a cyclic number.

It is not a de Polignac number, because 1947080497 - 2²³ = 1938691889 is a prime.

It is a super-2 number, since 2×1947080497² = 7582244923595534018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1947080497.

It is not a weakly prime, because it can be changed into another prime (1947080897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973540248 + 973540249.

It is an arithmetic number, because the mean of its divisors is an integer number (973540249).

Almost surely, 2^1947080497 is an apocalyptic number.

It is an amenable number.

1947080497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1947080497 is an equidigital number, since it uses as much as digits as its factorization.

1947080497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 1947080497 is about 44125.7350873614. The cubic root of 1947080497 is about 1248.7091734991.

The spelling of 1947080497 in words is "one billion, nine hundred forty-seven million, eighty thousand, four hundred ninety-seven".