1340951161 has 9 divisors (see below), whose sum is σ = 1474380943. Its totient is φ = 1218680320.

The previous prime is 1340951123. The next prime is 1340951167. The reversal of 1340951161 is 1611590431.

The square root of 1340951161 is 36619.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 522991161 + 817960000 = 22869^2 + 28600^2 .

It is not a de Polignac number, because 1340951161 - 2⁷ = 1340951033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340951167) 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 8 ways as a sum of consecutive naturals, for example, 401145 + ... + 404473.

Almost surely, 2^1340951161 is an apocalyptic number.

1340951161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1340951161 is the 36619-th square number.

1340951161 is the 18310-th centered octagonal number.

It is an amenable number.

1340951161 is a deficient number, since it is larger than the sum of its proper divisors (133429782).

1340951161 is an frugal number, since it uses more digits than its factorization.

1340951161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680 (or 3340 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The cubic root of 1340951161 is about 1102.7345630018.

The spelling of 1340951161 in words is "one billion, three hundred forty million, nine hundred fifty-one thousand, one hundred sixty-one".