2078354057 has 12 divisors (see below), whose sum is σ = 2382912540. Its totient is φ = 1805626368.

The previous prime is 2078354051. The next prime is 2078354093. The reversal of 2078354057 is 7504538702.

It can be written as a sum of positive squares in 6 ways, for example, as 282374416 + 1795979641 = 16804^2 + 42379^2 .

It is not a de Polignac number, because 2078354057 - 2¹⁰ = 2078353033 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2078354051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358832 + ... + 364577.

It is an arithmetic number, because the mean of its divisors is an integer number (198576045).

Almost surely, 2^2078354057 is an apocalyptic number.

It is an amenable number.

2078354057 is a deficient number, since it is larger than the sum of its proper divisors (304558483).

2078354057 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 2078354057 = (5324708705)₉.

2078354057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723452 (or 723439 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 2078354057 is about 45588.9685889032. The cubic root of 2078354057 is about 1276.1640645640.

The spelling of 2078354057 in words is "two billion, seventy-eight million, three hundred fifty-four thousand, fifty-seven".