1201081672 has 64 divisors (see below), whose sum is σ = 2607575040. Its totient is φ = 508032000.

The previous prime is 1201081669. The next prime is 1201081691. The reversal of 1201081672 is 2761801021.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1201081672.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1998172 + ... + 1998772.

It is an arithmetic number, because the mean of its divisors is an integer number (40743360).

Almost surely, 2^1201081672 is an apocalyptic number.

It is an amenable number.

1201081672 is an abundant number, since it is smaller than the sum of its proper divisors (1406493368).

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

1201081672 is a wasteful number, since it uses less digits than its factorization.

1201081672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1201081672 is about 34656.6252252004. The cubic root of 1201081672 is about 1062.9777644116.

Adding to 1201081672 its reverse (2761801021), we get a palindrome (3962882693).

The spelling of 1201081672 in words is "one billion, two hundred one million, eighty-one thousand, six hundred seventy-two".