2132494781 has 2 divisors, whose sum is σ = 2132494782. Its totient is φ = 2132494780.

The previous prime is 2132494769. The next prime is 2132494789. The reversal of 2132494781 is 1874942312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2091598756 + 40896025 = 45734^2 + 6395^2 .

It is a cyclic number.

It is not a de Polignac number, because 2132494781 - 2⁶ = 2132494717 is a prime.

It is a super-2 number, since 2×2132494781² = 9095067981984475922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2132494789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066247390 + 1066247391.

It is an arithmetic number, because the mean of its divisors is an integer number (1066247391).

Almost surely, 2^2132494781 is an apocalyptic number.

It is an amenable number.

2132494781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2132494781 is an equidigital number, since it uses as much as digits as its factorization.

2132494781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 2132494781 is about 46178.9430476705. The cubic root of 2132494781 is about 1287.1504879162.

The spelling of 2132494781 in words is "two billion, one hundred thirty-two million, four hundred ninety-four thousand, seven hundred eighty-one".