1087381957 has 2 divisors, whose sum is σ = 1087381958. Its totient is φ = 1087381956.

The previous prime is 1087381907. The next prime is 1087381963. The reversal of 1087381957 is 7591837801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1008634081 + 78747876 = 31759^2 + 8874^2 .

It is an emirp because it is prime and its reverse (7591837801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1087381957 - 2¹⁹ = 1086857669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1087381957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087381907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543690978 + 543690979.

It is an arithmetic number, because the mean of its divisors is an integer number (543690979).

Almost surely, 2^1087381957 is an apocalyptic number.

It is an amenable number.

1087381957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087381957 is an equidigital number, since it uses as much as digits as its factorization.

1087381957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 49.

The square root of 1087381957 is about 32975.4750837649. The cubic root of 1087381957 is about 1028.3178490582.

The spelling of 1087381957 in words is "one billion, eighty-seven million, three hundred eighty-one thousand, nine hundred fifty-seven".