1465941991 has 2 divisors, whose sum is σ = 1465941992. Its totient is φ = 1465941990.

The previous prime is 1465941973. The next prime is 1465942031. The reversal of 1465941991 is 1991495641.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1465941991 - 2⁵ = 1465941959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1465941901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 732970995 + 732970996.

It is an arithmetic number, because the mean of its divisors is an integer number (732970996).

Almost surely, 2^1465941991 is an apocalyptic number.

1465941991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1465941991 is an equidigital number, since it uses as much as digits as its factorization.

1465941991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 49.

The square root of 1465941991 is about 38287.6219031687. The cubic root of 1465941991 is about 1135.9841234536.

The spelling of 1465941991 in words is "one billion, four hundred sixty-five million, nine hundred forty-one thousand, nine hundred ninety-one".