1967013491 has 2 divisors, whose sum is σ = 1967013492. Its totient is φ = 1967013490.

The previous prime is 1967013467. The next prime is 1967013511. The reversal of 1967013491 is 1943107691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1967013491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1967013401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983506745 + 983506746.

It is an arithmetic number, because the mean of its divisors is an integer number (983506746).

Almost surely, 2^1967013491 is an apocalyptic number.

1967013491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1967013491 is an equidigital number, since it uses as much as digits as its factorization.

1967013491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 1967013491 is about 44351.0258167723. The cubic root of 1967013491 is about 1252.9558827760.

The spelling of 1967013491 in words is "one billion, nine hundred sixty-seven million, thirteen thousand, four hundred ninety-one".