2077798157 has 12 divisors (see below), whose sum is σ = 2278421376. Its totient is φ = 1892483520.

The previous prime is 2077798133. The next prime is 2077798199. The reversal of 2077798157 is 7518977702.

It is not a de Polignac number, because 2077798157 - 2¹⁴ = 2077781773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2077798099 and 2077798108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2077798117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107003 + ... + 124920.

It is an arithmetic number, because the mean of its divisors is an integer number (189868448).

Almost surely, 2^2077798157 is an apocalyptic number.

It is an amenable number.

2077798157 is a deficient number, since it is larger than the sum of its proper divisors (200623219).

2077798157 is a wasteful number, since it uses less digits than its factorization.

2077798157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231988 (or 231971 counting only the distinct ones).

The product of its (nonzero) digits is 1728720, while the sum is 53.

The square root of 2077798157 is about 45582.8713114916. The cubic root of 2077798157 is about 1276.0502753437.

The spelling of 2077798157 in words is "two billion, seventy-seven million, seven hundred ninety-eight thousand, one hundred fifty-seven".