1361957958 has 48 divisors (see below), whose sum is σ = 3132919296. Its totient is φ = 426128640.

The previous prime is 1361957957. The next prime is 1361957969. The reversal of 1361957958 is 8597591631.

1361957958 is a `hidden beast` number, since 1 + 3 + 6 + 19 + 579 + 58 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361957957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111388 + ... + 123008.

It is an arithmetic number, because the mean of its divisors is an integer number (65269152).

Almost surely, 2^1361957958 is an apocalyptic number.

1361957958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361957958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1566459648).

1361957958 is an abundant number, since it is smaller than the sum of its proper divisors (1770961338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361957958 is a wasteful number, since it uses less digits than its factorization.

1361957958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12029 (or 12026 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 54.

The square root of 1361957958 is about 36904.7145768667. The cubic root of 1361957958 is about 1108.4630835693.

The spelling of 1361957958 in words is "one billion, three hundred sixty-one million, nine hundred fifty-seven thousand, nine hundred fifty-eight".