2078744557 has 4 divisors (see below), whose sum is σ = 2079780256. Its totient is φ = 2077708860.

The previous prime is 2078744539. The next prime is 2078744573. The reversal of 2078744557 is 7554478702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2078744557 - 2²³ = 2070355949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2078744557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078744537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514833 + ... + 518854.

It is an arithmetic number, because the mean of its divisors is an integer number (519945064).

Almost surely, 2^2078744557 is an apocalyptic number.

It is an amenable number.

2078744557 is a deficient number, since it is larger than the sum of its proper divisors (1035699).

2078744557 is a wasteful number, since it uses less digits than its factorization.

2078744557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035698.

The product of its (nonzero) digits is 2195200, while the sum is 49.

The square root of 2078744557 is about 45593.2512220833. The cubic root of 2078744557 is about 1276.2439853163.

The spelling of 2078744557 in words is "two billion, seventy-eight million, seven hundred forty-four thousand, five hundred fifty-seven".