1081961534 has 8 divisors (see below), whose sum is σ = 1623183528. Its totient is φ = 540900360.

The previous prime is 1081961533. The next prime is 1081961539. The reversal of 1081961534 is 4351691801.

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

It is a super-2 number, since 2×1081961534² = 2341281522111266312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081961533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21677 + ... + 51320.

It is an arithmetic number, because the mean of its divisors is an integer number (202897941).

Almost surely, 2^1081961534 is an apocalyptic number.

1081961534 is a deficient number, since it is larger than the sum of its proper divisors (541221994).

1081961534 is an equidigital number, since it uses as much as digits as its factorization.

1081961534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80410.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 1081961534 is about 32893.1837011865. The cubic root of 1081961534 is about 1026.6063360334.

The spelling of 1081961534 in words is "one billion, eighty-one million, nine hundred sixty-one thousand, five hundred thirty-four".