2145331413 has 10 divisors (see below), whose sum is σ = 3204754454. Its totient is φ = 1430220888.

The previous prime is 2145331411. The next prime is 2145331453. The reversal of 2145331413 is 3141335412.

It is a happy number.

2145331413 is a `hidden beast` number, since 214 + 5 + 3 + 31 + 413 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1671746769 + 473584644 = 40887^2 + 21762^2 .

It is not a de Polignac number, because 2145331413 - 2¹ = 2145331411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145331411) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13242706 + ... + 13242867.

Almost surely, 2^2145331413 is an apocalyptic number.

It is an amenable number.

2145331413 is a deficient number, since it is larger than the sum of its proper divisors (1059423041).

2145331413 is an equidigital number, since it uses as much as digits as its factorization.

2145331413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26485585 (or 26485576 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2145331413 is about 46317.7224504832. The cubic root of 2145331413 is about 1289.7280064731.

Adding to 2145331413 its reverse (3141335412), we get a palindrome (5286666825).

The spelling of 2145331413 in words is "two billion, one hundred forty-five million, three hundred thirty-one thousand, four hundred thirteen".