1497117949 has 2 divisors, whose sum is σ = 1497117950. Its totient is φ = 1497117948.

The previous prime is 1497117929. The next prime is 1497117961. The reversal of 1497117949 is 9497117941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1158925849 + 338192100 = 34043^2 + 18390^2 .

It is a cyclic number.

It is not a de Polignac number, because 1497117949 - 2⁵ = 1497117917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1497117896 and 1497117905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1497117929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 748558974 + 748558975.

It is an arithmetic number, because the mean of its divisors is an integer number (748558975).

Almost surely, 2^1497117949 is an apocalyptic number.

It is an amenable number.

1497117949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1497117949 is an equidigital number, since it uses as much as digits as its factorization.

1497117949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 52.

The square root of 1497117949 is about 38692.6084543288. The cubic root of 1497117949 is about 1143.9806336579.

The spelling of 1497117949 in words is "one billion, four hundred ninety-seven million, one hundred seventeen thousand, nine hundred forty-nine".