1187946061 has 8 divisors (see below), whose sum is σ = 1218778560. Its totient is φ = 1157470272.

The previous prime is 1187946047. The next prime is 1187946131. The reversal of 1187946061 is 1606497811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1187946061 - 2⁵ = 1187946029 is a prime.

It is a super-2 number, since 2×1187946061² = 2822431687690831442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1187945999 and 1187946017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187946031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82425 + ... + 95758.

It is an arithmetic number, because the mean of its divisors is an integer number (152347320).

Almost surely, 2^1187946061 is an apocalyptic number.

It is an amenable number.

1187946061 is a deficient number, since it is larger than the sum of its proper divisors (30832499).

1187946061 is a wasteful number, since it uses less digits than its factorization.

1187946061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178355.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1187946061 is about 34466.5934057893. The cubic root of 1187946061 is about 1059.0884714445.

The spelling of 1187946061 in words is "one billion, one hundred eighty-seven million, nine hundred forty-six thousand, sixty-one".