1827725961 has 16 divisors (see below), whose sum is σ = 2458957824. Its totient is φ = 1207511424.

The previous prime is 1827725959. The next prime is 1827725987. The reversal of 1827725961 is 1695277281.

It is not a de Polignac number, because 1827725961 - 2¹ = 1827725959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1827725961.

It is not an unprimeable number, because it can be changed into a prime (1827725941) 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, 415771 + ... + 420143.

It is an arithmetic number, because the mean of its divisors is an integer number (153684864).

Almost surely, 2^1827725961 is an apocalyptic number.

It is an amenable number.

1827725961 is a deficient number, since it is larger than the sum of its proper divisors (631231863).

1827725961 is a wasteful number, since it uses less digits than its factorization.

1827725961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600.

The product of its digits is 423360, while the sum is 48.

The square root of 1827725961 is about 42751.9117818139. The cubic root of 1827725961 is about 1222.6543392696.

The spelling of 1827725961 in words is "one billion, eight hundred twenty-seven million, seven hundred twenty-five thousand, nine hundred sixty-one".