1098737651 has 4 divisors (see below), whose sum is σ = 1198622904. Its totient is φ = 998852400.

The previous prime is 1098737617. The next prime is 1098737657. The reversal of 1098737651 is 1567378901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1567378901 = 11 ⋅142488991.

It is a cyclic number.

It is not a de Polignac number, because 1098737651 - 2²² = 1094543347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1098737596 and 1098737605.

It is not an unprimeable number, because it can be changed into a prime (1098737657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49942610 + ... + 49942631.

It is an arithmetic number, because the mean of its divisors is an integer number (299655726).

Almost surely, 2^1098737651 is an apocalyptic number.

1098737651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1098737651 is a deficient number, since it is larger than the sum of its proper divisors (99885253).

1098737651 is an equidigital number, since it uses as much as digits as its factorization.

1098737651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99885252.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 1098737651 is about 33147.2118133637. The cubic root of 1098737651 is about 1031.8850861947.

The spelling of 1098737651 in words is "one billion, ninety-eight million, seven hundred thirty-seven thousand, six hundred fifty-one".