1098223815 has 32 divisors (see below), whose sum is σ = 1911865536. Its totient is φ = 535080960.

The previous prime is 1098223813. The next prime is 1098223871. The reversal of 1098223815 is 5183228901.

It is not a de Polignac number, because 1098223815 - 2¹ = 1098223813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098223813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10116 + ... + 47945.

It is an arithmetic number, because the mean of its divisors is an integer number (59745798).

Almost surely, 2^1098223815 is an apocalyptic number.

1098223815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1098223815 is a deficient number, since it is larger than the sum of its proper divisors (813641721).

1098223815 is a wasteful number, since it uses less digits than its factorization.

1098223815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58179.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1098223815 is about 33139.4600891445. The cubic root of 1098223815 is about 1031.7242038766.

The spelling of 1098223815 in words is "one billion, ninety-eight million, two hundred twenty-three thousand, eight hundred fifteen".