1098644437 has 8 divisors (see below), whose sum is σ = 1199540160. Its totient is φ = 997918560.

The previous prime is 1098644423. The next prime is 1098644471. The reversal of 1098644437 is 7344468901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1098644437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098645437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28737 + ... + 54982.

It is an arithmetic number, because the mean of its divisors is an integer number (149942520).

Almost surely, 2^1098644437 is an apocalyptic number.

It is an amenable number.

1098644437 is a deficient number, since it is larger than the sum of its proper divisors (100895723).

1098644437 is a wasteful number, since it uses less digits than its factorization.

1098644437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84923.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 1098644437 is about 33145.8057225948. The cubic root of 1098644437 is about 1031.8559045678.

The spelling of 1098644437 in words is "one billion, ninety-eight million, six hundred forty-four thousand, four hundred thirty-seven".