1147213893 has 32 divisors (see below), whose sum is σ = 1766643712. Its totient is φ = 648648000.

The previous prime is 1147213891. The next prime is 1147213913. The reversal of 1147213893 is 3983127411.

It is not a de Polignac number, because 1147213893 - 2¹ = 1147213891 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147213891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1049055 + ... + 1050147.

It is an arithmetic number, because the mean of its divisors is an integer number (55207616).

Almost surely, 2^1147213893 is an apocalyptic number.

It is an amenable number.

1147213893 is a deficient number, since it is larger than the sum of its proper divisors (619429819).

1147213893 is a wasteful number, since it uses less digits than its factorization.

1147213893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its digits is 36288, while the sum is 39.

The square root of 1147213893 is about 33870.5460983433. The cubic root of 1147213893 is about 1046.8427892167.

The spelling of 1147213893 in words is "one billion, one hundred forty-seven million, two hundred thirteen thousand, eight hundred ninety-three".