1661736962 has 4 divisors (see below), whose sum is σ = 2492605446. Its totient is φ = 830868480.

The previous prime is 1661736919. The next prime is 1661736971. The reversal of 1661736962 is 2696371661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1115626801 + 546110161 = 33401^2 + 23369^2 .

It is a super-2 number, since 2×1661736962² = 5522739461753978888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415434239 + ... + 415434242.

Almost surely, 2^1661736962 is an apocalyptic number.

1661736962 is a deficient number, since it is larger than the sum of its proper divisors (830868484).

1661736962 is an equidigital number, since it uses as much as digits as its factorization.

1661736962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830868483.

The product of its digits is 489888, while the sum is 47.

The square root of 1661736962 is about 40764.4080295544. The cubic root of 1661736962 is about 1184.4609848366.

The spelling of 1661736962 in words is "one billion, six hundred sixty-one million, seven hundred thirty-six thousand, nine hundred sixty-two".