2057658734 has 4 divisors (see below), whose sum is σ = 3086488104. Its totient is φ = 1028829366.

The previous prime is 2057658703. The next prime is 2057658737. The reversal of 2057658734 is 4378567502.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057658737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514414682 + ... + 514414685.

It is an arithmetic number, because the mean of its divisors is an integer number (771622026).

Almost surely, 2^2057658734 is an apocalyptic number.

2057658734 is a deficient number, since it is larger than the sum of its proper divisors (1028829370).

2057658734 is a wasteful number, since it uses less digits than its factorization.

2057658734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028829369.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The square root of 2057658734 is about 45361.4234124107. The cubic root of 2057658734 is about 1271.9141025385.

The spelling of 2057658734 in words is "two billion, fifty-seven million, six hundred fifty-eight thousand, seven hundred thirty-four".