1961115 has 32 divisors (see below), whose sum is σ = 3447360. Its totient is φ = 946176.

The previous prime is 1961107. The next prime is 1961129. The reversal of 1961115 is 5111691.

It is not a de Polignac number, because 1961115 - 2³ = 1961107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17299 + ... + 17411.

It is an arithmetic number, because the mean of its divisors is an integer number (107730).

2^1961115 is an apocalyptic number.

1961115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1961115 is a deficient number, since it is larger than the sum of its proper divisors (1486245).

1961115 is a wasteful number, since it uses less digits than its factorization.

1961115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223.

The product of its digits is 270, while the sum is 24.

The square root of 1961115 is about 1400.3981576680. The cubic root of 1961115 is about 125.1702214254.

The spelling of 1961115 in words is "one million, nine hundred sixty-one thousand, one hundred fifteen".