1201290678 has 24 divisors (see below), whose sum is σ = 2974624848. Its totient is φ = 343225872.

The previous prime is 1201290661. The next prime is 1201290689. The reversal of 1201290678 is 8760921021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4766901 + ... + 4767152.

It is an arithmetic number, because the mean of its divisors is an integer number (123942702).

Almost surely, 2^1201290678 is an apocalyptic number.

1201290678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1201290678 is an abundant number, since it is smaller than the sum of its proper divisors (1773334170).

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

1201290678 is a wasteful number, since it uses less digits than its factorization.

1201290678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9534068 (or 9534065 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1201290678 is about 34659.6404770736. The cubic root of 1201290678 is about 1063.0394187937.

The spelling of 1201290678 in words is "one billion, two hundred one million, two hundred ninety thousand, six hundred seventy-eight".