1562499947 has 2 divisors, whose sum is σ = 1562499948. Its totient is φ = 1562499946.

The previous prime is 1562499881. The next prime is 1562500003. The reversal of 1562499947 is 7499942651.

It is an a-pointer prime, because the next prime (1562500003) can be obtained adding 1562499947 to its sum of digits (56).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1562499947 - 2⁸ = 1562499691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1562499892 and 1562499901.

It is not a weakly prime, because it can be changed into another prime (1562499047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781249973 + 781249974.

It is an arithmetic number, because the mean of its divisors is an integer number (781249974).

Almost surely, 2^1562499947 is an apocalyptic number.

1562499947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1562499947 is an equidigital number, since it uses as much as digits as its factorization.

1562499947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 56.

The square root of 1562499947 is about 39528.4700817019. The cubic root of 1562499947 is about 1160.3971952830.

The spelling of 1562499947 in words is "one billion, five hundred sixty-two million, four hundred ninety-nine thousand, nine hundred forty-seven".