2145640796 has 24 divisors (see below), whose sum is σ = 4044993120. Its totient is φ = 989980992.

The previous prime is 2145640793. The next prime is 2145640799. The reversal of 2145640796 is 6970465412.

It is an interprime number because it is at equal distance from previous prime (2145640793) and next prime (2145640799).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145640793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268385 + ... + 276263.

It is an arithmetic number, because the mean of its divisors is an integer number (168541380).

Almost surely, 2^2145640796 is an apocalyptic number.

2145640796 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2145640796 is a deficient number, since it is larger than the sum of its proper divisors (1899352324).

2145640796 is a wasteful number, since it uses less digits than its factorization.

2145640796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13133 (or 13131 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 2145640796 is about 46321.0621208107. The cubic root of 2145640796 is about 1289.7900016716.

The spelling of 2145640796 in words is "two billion, one hundred forty-five million, six hundred forty thousand, seven hundred ninety-six".