1961156 has 12 divisors (see below), whose sum is σ = 3448620. Its totient is φ = 975840.

The previous prime is 1961147. The next prime is 1961173. The reversal of 1961156 is 6511691.

It can be written as a sum of positive squares in 2 ways, for example, as 1849600 + 111556 = 1360^2 + 334^2 .

It is a super-2 number, since 2×1961156² = 7692265712672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155 + ... + 1986.

It is an arithmetic number, because the mean of its divisors is an integer number (287385).

2^1961156 is an apocalyptic number.

It is an amenable number.

1961156 is a deficient number, since it is larger than the sum of its proper divisors (1487464).

1961156 is a wasteful number, since it uses less digits than its factorization.

1961156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374 (or 2372 counting only the distinct ones).

The product of its digits is 1620, while the sum is 29.

The square root of 1961156 is about 1400.4127962854. The cubic root of 1961156 is about 125.1710937087.

It can be divided in two parts, 196 and 1156, that multiplied together give a square (226576 = 476²).

The spelling of 1961156 in words is "one million, nine hundred sixty-one thousand, one hundred fifty-six".