1961164 has 12 divisors (see below), whose sum is σ = 3581424. Its totient is φ = 937904.

The previous prime is 1961147. The next prime is 1961173. The reversal of 1961164 is 4611691.

1961164 = T₄₄ + T₄₅ + ... + T₂₂₇.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10567 + ... + 10750.

It is an arithmetic number, because the mean of its divisors is an integer number (298452).

2^1961164 is an apocalyptic number.

It is an amenable number.

1961164 is a deficient number, since it is larger than the sum of its proper divisors (1620260).

1961164 is a wasteful number, since it uses less digits than its factorization.

1961164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21344 (or 21342 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 1961164 is about 1400.4156525832. The cubic root of 1961164 is about 125.1712639089.

The spelling of 1961164 in words is "one million, nine hundred sixty-one thousand, one hundred sixty-four".