1522347949 has 2 divisors, whose sum is σ = 1522347950. Its totient is φ = 1522347948.

The previous prime is 1522347941. The next prime is 1522347971. The reversal of 1522347949 is 9497432251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1496916100 + 25431849 = 38690^2 + 5043^2 .

It is a cyclic number.

It is not a de Polignac number, because 1522347949 - 2³ = 1522347941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1522347899 and 1522347908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1522347941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761173974 + 761173975.

It is an arithmetic number, because the mean of its divisors is an integer number (761173975).

Almost surely, 2^1522347949 is an apocalyptic number.

It is an amenable number.

1522347949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1522347949 is an equidigital number, since it uses as much as digits as its factorization.

1522347949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 1522347949 is about 39017.2775703277. The cubic root of 1522347949 is about 1150.3711338991.

The spelling of 1522347949 in words is "one billion, five hundred twenty-two million, three hundred forty-seven thousand, nine hundred forty-nine".