2102737745 has 4 divisors (see below), whose sum is σ = 2523285300. Its totient is φ = 1682190192.

The previous prime is 2102737709. The next prime is 2102737783. The reversal of 2102737745 is 5477372012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 971693584 + 1131044161 = 31172^2 + 33631^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102737745 - 2⁸ = 2102737489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102737699 and 2102737708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210273770 + ... + 210273779.

It is an arithmetic number, because the mean of its divisors is an integer number (630821325).

Almost surely, 2^2102737745 is an apocalyptic number.

It is an amenable number.

2102737745 is a deficient number, since it is larger than the sum of its proper divisors (420547555).

2102737745 is an equidigital number, since it uses as much as digits as its factorization.

2102737745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420547554.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 2102737745 is about 45855.6184670974. The cubic root of 2102737745 is about 1281.1354152693.

The spelling of 2102737745 in words is "two billion, one hundred two million, seven hundred thirty-seven thousand, seven hundred forty-five".