1198612020 has 48 divisors (see below), whose sum is σ = 3369215808. Its totient is φ = 318382080.

The previous prime is 1198611991. The next prime is 1198612027. The reversal of 1198612020 is 202168911.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198612027) 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, 23446 + ... + 54285.

It is an arithmetic number, because the mean of its divisors is an integer number (70191996).

Almost surely, 2^1198612020 is an apocalyptic number.

1198612020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1198612020 is an abundant number, since it is smaller than the sum of its proper divisors (2170603788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1198612020 is a wasteful number, since it uses less digits than its factorization.

1198612020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78000 (or 77998 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1198612020 is about 34620.9765893454. The cubic root of 1198612020 is about 1062.2487031068.

The spelling of 1198612020 in words is "one billion, one hundred ninety-eight million, six hundred twelve thousand, twenty".