1126491644 has 6 divisors (see below), whose sum is σ = 1971360384. Its totient is φ = 563245820.

The previous prime is 1126491643. The next prime is 1126491673. The reversal of 1126491644 is 4461946211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1126491598 and 1126491607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126491643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140811452 + ... + 140811459.

It is an arithmetic number, because the mean of its divisors is an integer number (328560064).

Almost surely, 2^1126491644 is an apocalyptic number.

It is an amenable number.

1126491644 is a deficient number, since it is larger than the sum of its proper divisors (844868740).

1126491644 is a wasteful number, since it uses less digits than its factorization.

1126491644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281622915 (or 281622913 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 1126491644 is about 33563.2484125122. The cubic root of 1126491644 is about 1040.5013743775.

The spelling of 1126491644 in words is "one billion, one hundred twenty-six million, four hundred ninety-one thousand, six hundred forty-four".