1101432644 has 48 divisors (see below), whose sum is σ = 2188030320. Its totient is φ = 481528320.

The previous prime is 1101432643. The next prime is 1101432649. The reversal of 1101432644 is 4462341011.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1183744 + 1100248900 = 1088^2 + 33170^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1101432643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73034 + ... + 86814.

It is an arithmetic number, because the mean of its divisors is an integer number (45583965).

Almost surely, 2^1101432644 is an apocalyptic number.

It is an amenable number.

1101432644 is a deficient number, since it is larger than the sum of its proper divisors (1086597676).

1101432644 is a wasteful number, since it uses less digits than its factorization.

1101432644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13880 (or 13878 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1101432644 is about 33187.8387967641. The cubic root of 1101432644 is about 1032.7280694990.

Adding to 1101432644 its reverse (4462341011), we get a palindrome (5563773655).

The spelling of 1101432644 in words is "one billion, one hundred one million, four hundred thirty-two thousand, six hundred forty-four".