1027491369 has 16 divisors (see below), whose sum is σ = 1417306368. Its totient is φ = 661606272.

The previous prime is 1027491349. The next prime is 1027491371. The reversal of 1027491369 is 9631947201.

It is not a de Polignac number, because 1027491369 - 2¹² = 1027487273 is a prime.

It is a super-2 number, since 2×1027491369² = 2111477026738988322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1027491369.

It is not an unprimeable number, because it can be changed into a prime (1027491349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18577 + ... + 48990.

It is an arithmetic number, because the mean of its divisors is an integer number (88581648).

Almost surely, 2^1027491369 is an apocalyptic number.

It is an amenable number.

1027491369 is a deficient number, since it is larger than the sum of its proper divisors (389814999).

1027491369 is a wasteful number, since it uses less digits than its factorization.

1027491369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67744.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 1027491369 is about 32054.5062198749. The cubic root of 1027491369 is about 1009.0810741329.

The spelling of 1027491369 in words is "one billion, twenty-seven million, four hundred ninety-one thousand, three hundred sixty-nine".