1375662961 has 8 divisors (see below), whose sum is σ = 1397574080. Its totient is φ = 1353792528.

The previous prime is 1375662929. The next prime is 1375662973. The reversal of 1375662961 is 1692665731.

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

It is a cyclic number.

It is not a de Polignac number, because 1375662961 - 2⁵ = 1375662929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375662901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62020 + ... + 81226.

It is an arithmetic number, because the mean of its divisors is an integer number (174696760).

Almost surely, 2^1375662961 is an apocalyptic number.

It is an amenable number.

1375662961 is a deficient number, since it is larger than the sum of its proper divisors (21911119).

1375662961 is a wasteful number, since it uses less digits than its factorization.

1375662961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20343.

The product of its digits is 408240, while the sum is 46.

The square root of 1375662961 is about 37089.9307225020. The cubic root of 1375662961 is about 1112.1687331833.

The spelling of 1375662961 in words is "one billion, three hundred seventy-five million, six hundred sixty-two thousand, nine hundred sixty-one".