1011742381 has 32 divisors (see below), whose sum is σ = 1191142400. Its totient is φ = 851005440.

The previous prime is 1011742379. The next prime is 1011742421. The reversal of 1011742381 is 1832471101.

It is not a de Polignac number, because 1011742381 - 2¹ = 1011742379 is a prime.

It is a super-2 number, since 2×1011742381² = 2047245291023098322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011742321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1753165 + ... + 1753741.

It is an arithmetic number, because the mean of its divisors is an integer number (37223200).

Almost surely, 2^1011742381 is an apocalyptic number.

It is an amenable number.

1011742381 is a deficient number, since it is larger than the sum of its proper divisors (179400019).

1011742381 is a wasteful number, since it uses less digits than its factorization.

1011742381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1011742381 is about 31807.8980915118. The cubic root of 1011742381 is about 1003.8989057774.

The spelling of 1011742381 in words is "one billion, eleven million, seven hundred forty-two thousand, three hundred eighty-one".