2091548737 has 2 divisors, whose sum is σ = 2091548738. Its totient is φ = 2091548736.

The previous prime is 2091548729. The next prime is 2091548741. The reversal of 2091548737 is 7378451902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1996213041 + 95335696 = 44679^2 + 9764^2 .

It is a cyclic number.

It is not a de Polignac number, because 2091548737 - 2³ = 2091548729 is a prime.

It is a super-2 number, since 2×2091548737² = 8749152238492590338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2091528737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045774368 + 1045774369.

It is an arithmetic number, because the mean of its divisors is an integer number (1045774369).

Almost surely, 2^2091548737 is an apocalyptic number.

It is an amenable number.

2091548737 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091548737 is an equidigital number, since it uses as much as digits as its factorization.

2091548737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 2091548737 is about 45733.4531497459. The cubic root of 2091548737 is about 1278.8589964256.

The spelling of 2091548737 in words is "two billion, ninety-one million, five hundred forty-eight thousand, seven hundred thirty-seven".