2051854078 has 8 divisors (see below), whose sum is σ = 3078262368. Its totient is φ = 1025766624.

The previous prime is 2051854073. The next prime is 2051854109. The reversal of 2051854078 is 8704581502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2051854078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051854073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63526 + ... + 90217.

It is an arithmetic number, because the mean of its divisors is an integer number (384782796).

Almost surely, 2^2051854078 is an apocalyptic number.

2051854078 is a deficient number, since it is larger than the sum of its proper divisors (1026408290).

2051854078 is a wasteful number, since it uses less digits than its factorization.

2051854078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160418.

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 2051854078 is about 45297.3959295675. The cubic root of 2051854078 is about 1270.7169527374.

The spelling of 2051854078 in words is "two billion, fifty-one million, eight hundred fifty-four thousand, seventy-eight".