1011610649 has 4 divisors (see below), whose sum is σ = 1156126464. Its totient is φ = 867094836.

The previous prime is 1011610609. The next prime is 1011610651. The reversal of 1011610649 is 9460161101.

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: 9460161101 = 57089 ⋅165709.

It is a cyclic number.

It is not a de Polignac number, because 1011610649 - 2¹² = 1011606553 is a prime.

It is a super-2 number, since 2×1011610649² = 2046712210340402402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011610609) 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, 72257897 + ... + 72257910.

It is an arithmetic number, because the mean of its divisors is an integer number (289031616).

Almost surely, 2^1011610649 is an apocalyptic number.

It is an amenable number.

1011610649 is a deficient number, since it is larger than the sum of its proper divisors (144515815).

1011610649 is an equidigital number, since it uses as much as digits as its factorization.

1011610649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144515814.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1011610649 is about 31805.8272805472. The cubic root of 1011610649 is about 1003.8553336345.

The spelling of 1011610649 in words is "one billion, eleven million, six hundred ten thousand, six hundred forty-nine".