1013961387 has 4 divisors (see below), whose sum is σ = 1351948520. Its totient is φ = 675974256.

The previous prime is 1013961383. The next prime is 1013961407. The reversal of 1013961387 is 7831693101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7831693101 = 3 ⋅2610564367.

It is not a de Polignac number, because 1013961387 - 2² = 1013961383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013961383) 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 3 ways as a sum of consecutive naturals, for example, 168993562 + ... + 168993567.

It is an arithmetic number, because the mean of its divisors is an integer number (337987130).

Almost surely, 2^1013961387 is an apocalyptic number.

1013961387 is a deficient number, since it is larger than the sum of its proper divisors (337987133).

1013961387 is an equidigital number, since it uses as much as digits as its factorization.

1013961387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337987132.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 1013961387 is about 31842.7603545924. The cubic root of 1013961387 is about 1004.6323042899.

The spelling of 1013961387 in words is "one billion, thirteen million, nine hundred sixty-one thousand, three hundred eighty-seven".