1972463491 has 2 divisors, whose sum is σ = 1972463492. Its totient is φ = 1972463490.

The previous prime is 1972463461. The next prime is 1972463501. The reversal of 1972463491 is 1943642791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1972463491 - 2⁵ = 1972463459 is a prime.

It is a super-2 number, since 2×1972463491² = 7781224446655814162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1972463411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986231745 + 986231746.

It is an arithmetic number, because the mean of its divisors is an integer number (986231746).

Almost surely, 2^1972463491 is an apocalyptic number.

1972463491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972463491 is an equidigital number, since it uses as much as digits as its factorization.

1972463491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 1972463491 is about 44412.4249619405. The cubic root of 1972463491 is about 1254.1120030587.

The spelling of 1972463491 in words is "one billion, nine hundred seventy-two million, four hundred sixty-three thousand, four hundred ninety-one".