1961972 has 6 divisors (see below), whose sum is σ = 3433458. Its totient is φ = 980984.

The previous prime is 1961963. The next prime is 1961983. The reversal of 1961972 is 2791691.

It can be written as a sum of positive squares in only one way, i.e., 1378276 + 583696 = 1174^2 + 764^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245243 + ... + 245250.

It is an arithmetic number, because the mean of its divisors is an integer number (572243).

2^1961972 is an apocalyptic number.

It is an amenable number.

1961972 is a deficient number, since it is larger than the sum of its proper divisors (1471486).

1961972 is a wasteful number, since it uses less digits than its factorization.

1961972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490497 (or 490495 counting only the distinct ones).

The product of its digits is 6804, while the sum is 35.

The square root of 1961972 is about 1400.7041086539. The cubic root of 1961972 is about 125.1884517447.

It can be divided in two parts, 19619 and 72, that added together give a palindrome (19691).

The spelling of 1961972 in words is "one million, nine hundred sixty-one thousand, nine hundred seventy-two".