2100977137 has 4 divisors (see below), whose sum is σ = 2401116736. Its totient is φ = 1800837540.

The previous prime is 2100977111. The next prime is 2100977141. The reversal of 2100977137 is 7317790012.

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 2100977137 - 2⁷ = 2100977009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100977096 and 2100977105.

It is not an unprimeable number, because it can be changed into a prime (2100977107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150069789 + ... + 150069802.

It is an arithmetic number, because the mean of its divisors is an integer number (600279184).

Almost surely, 2^2100977137 is an apocalyptic number.

It is an amenable number.

2100977137 is a deficient number, since it is larger than the sum of its proper divisors (300139599).

2100977137 is an equidigital number, since it uses as much as digits as its factorization.

2100977137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300139598.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 2100977137 is about 45836.4171483767. The cubic root of 2100977137 is about 1280.7777534407. Note that the first 4 decimals are identical.

The spelling of 2100977137 in words is "two billion, one hundred million, nine hundred seventy-seven thousand, one hundred thirty-seven".