1961154286 has 16 divisors (see below), whose sum is σ = 3620592864. Its totient is φ = 775841184.

The previous prime is 1961154199. The next prime is 1961154311. The reversal of 1961154286 is 6824511691.

It is a super-2 number, since 2×1961154286² = 7692252266992339592, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 5387605 + ... + 5387968.

It is an arithmetic number, because the mean of its divisors is an integer number (226287054).

Almost surely, 2^1961154286 is an apocalyptic number.

1961154286 is a deficient number, since it is larger than the sum of its proper divisors (1659438578).

1961154286 is a wasteful number, since it uses less digits than its factorization.

1961154286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10775595.

The product of its digits is 103680, while the sum is 43.

The square root of 1961154286 is about 44284.9216551187. The cubic root of 1961154286 is about 1251.7105724324.

The spelling of 1961154286 in words is "one billion, nine hundred sixty-one million, one hundred fifty-four thousand, two hundred eighty-six".