1061955381 has 8 divisors (see below), whose sum is σ = 1416681504. Its totient is φ = 707599760.

The previous prime is 1061955343. The next prime is 1061955397. The reversal of 1061955381 is 1835591601.

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 1061955381 - 2⁷ = 1061955253 is a prime.

It is a super-2 number, since 2×1061955381² = 2255498462469710322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061955311) 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, 85866 + ... + 97451.

It is an arithmetic number, because the mean of its divisors is an integer number (177085188).

Almost surely, 2^1061955381 is an apocalyptic number.

It is an amenable number.

1061955381 is a deficient number, since it is larger than the sum of its proper divisors (354726123).

1061955381 is a wasteful number, since it uses less digits than its factorization.

1061955381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185251.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 1061955381 is about 32587.6568810953. The cubic root of 1061955381 is about 1020.2393969034.

The spelling of 1061955381 in words is "one billion, sixty-one million, nine hundred fifty-five thousand, three hundred eighty-one".