2135194357 has 2 divisors, whose sum is σ = 2135194358. Its totient is φ = 2135194356.

The previous prime is 2135194343. The next prime is 2135194367. The reversal of 2135194357 is 7534915312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2133146596 + 2047761 = 46186^2 + 1431^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135194357 - 2²³ = 2126805749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135194367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067597178 + 1067597179.

It is an arithmetic number, because the mean of its divisors is an integer number (1067597179).

Almost surely, 2^2135194357 is an apocalyptic number.

It is an amenable number.

2135194357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135194357 is an equidigital number, since it uses as much as digits as its factorization.

2135194357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 40.

The square root of 2135194357 is about 46208.1633155874. The cubic root of 2135194357 is about 1287.6934037170.

The spelling of 2135194357 in words is "two billion, one hundred thirty-five million, one hundred ninety-four thousand, three hundred fifty-seven".