1790949161 has 4 divisors (see below), whose sum is σ = 1792459152. Its totient is φ = 1789439172.

The previous prime is 1790949137. The next prime is 1790949187. The reversal of 1790949161 is 1619490971.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1619490971 = 7 ⋅231355853.

It is a cyclic number.

It is not a de Polignac number, because 1790949161 - 2¹⁴ = 1790932777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1790949131) 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, 753215 + ... + 755588.

It is an arithmetic number, because the mean of its divisors is an integer number (448114788).

Almost surely, 2^1790949161 is an apocalyptic number.

It is an amenable number.

1790949161 is a deficient number, since it is larger than the sum of its proper divisors (1509991).

1790949161 is a wasteful number, since it uses less digits than its factorization.

1790949161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509990.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 1790949161 is about 42319.6072878754. The cubic root of 1790949161 is about 1214.3981192521.

The spelling of 1790949161 in words is "one billion, seven hundred ninety million, nine hundred forty-nine thousand, one hundred sixty-one".