1977923103 has 12 divisors (see below), whose sum is σ = 2855700360. Its totient is φ = 1217183136.

The previous prime is 1977923099. The next prime is 1977923119. The reversal of 1977923103 is 3013297791.

It is not a de Polignac number, because 1977923103 - 2² = 1977923099 is a prime.

It is a super-2 number, since 2×1977923103² = 7824359602762297218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977923173) 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, 1950108 + ... + 1951121.

It is an arithmetic number, because the mean of its divisors is an integer number (237975030).

Almost surely, 2^1977923103 is an apocalyptic number.

1977923103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1977923103 is a deficient number, since it is larger than the sum of its proper divisors (877777257).

1977923103 is a wasteful number, since it uses less digits than its factorization.

1977923103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901258 (or 3901245 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 1977923103 is about 44473.8474049637. The cubic root of 1977923103 is about 1255.2680290799.

The spelling of 1977923103 in words is "one billion, nine hundred seventy-seven million, nine hundred twenty-three thousand, one hundred three".