2051505494 has 8 divisors (see below), whose sum is σ = 3077453520. Its totient is φ = 1025687656.

The previous prime is 2051505377. The next prime is 2051505509. The reversal of 2051505494 is 4945051502.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34352 + ... + 72684.

It is an arithmetic number, because the mean of its divisors is an integer number (384681690).

Almost surely, 2^2051505494 is an apocalyptic number.

2051505494 is a deficient number, since it is larger than the sum of its proper divisors (1025948026).

2051505494 is a wasteful number, since it uses less digits than its factorization.

2051505494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65094.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 2051505494 is about 45293.5480394283. The cubic root of 2051505494 is about 1270.6449890942.

Adding to 2051505494 its reverse (4945051502), we get a palindrome (6996556996).

The spelling of 2051505494 in words is "two billion, fifty-one million, five hundred five thousand, four hundred ninety-four".