2657019049 has 2 divisors, whose sum is σ = 2657019050. Its totient is φ = 2657019048.

The previous prime is 2657019047. The next prime is 2657019143. The reversal of 2657019049 is 9409107562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2046929049 + 610090000 = 45243^2 + 24700^2 .

It is a cyclic number.

It is not a de Polignac number, because 2657019049 - 2¹ = 2657019047 is a prime.

Together with 2657019047, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2657018996 and 2657019014.

It is not a weakly prime, because it can be changed into another prime (2657019047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328509524 + 1328509525.

It is an arithmetic number, because the mean of its divisors is an integer number (1328509525).

Almost surely, 2^2657019049 is an apocalyptic number.

It is an amenable number.

2657019049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2657019049 is an equidigital number, since it uses as much as digits as its factorization.

2657019049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 2657019049 is about 51546.2806514689. The cubic root of 2657019049 is about 1385.0482067787.

The spelling of 2657019049 in words is "two billion, six hundred fifty-seven million, nineteen thousand, forty-nine".