1098768451 has 16 divisors (see below), whose sum is σ = 1217462400. Its totient is φ = 991527240.

The previous prime is 1098768449. The next prime is 1098768467. The reversal of 1098768451 is 1548678901.

It is not a de Polignac number, because 1098768451 - 2¹ = 1098768449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1098768395 and 1098768404.

It is not an unprimeable number, because it can be changed into a prime (1098763451) 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, 182040 + ... + 187978.

It is an arithmetic number, because the mean of its divisors is an integer number (76091400).

Almost surely, 2^1098768451 is an apocalyptic number.

1098768451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1098768451 is a deficient number, since it is larger than the sum of its proper divisors (118693949).

1098768451 is an equidigital number, since it uses as much as digits as its factorization.

1098768451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111 (or 6089 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 1098768451 is about 33147.6764042368. The cubic root of 1098768451 is about 1031.8947280971.

The spelling of 1098768451 in words is "one billion, ninety-eight million, seven hundred sixty-eight thousand, four hundred fifty-one".