1091379601 has 16 divisors (see below), whose sum is σ = 1231050240. Its totient is φ = 959999040.

The previous prime is 1091379559. The next prime is 1091379629. The reversal of 1091379601 is 1069731901.

It is not a de Polignac number, because 1091379601 - 2¹⁹ = 1090855313 is a prime.

It is a super-2 number, since 2×1091379601² = 2382218866957838402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1091379661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74295 + ... + 87763.

It is an arithmetic number, because the mean of its divisors is an integer number (76940640).

Almost surely, 2^1091379601 is an apocalyptic number.

It is an amenable number.

1091379601 is a deficient number, since it is larger than the sum of its proper divisors (139670639).

1091379601 is a wasteful number, since it uses less digits than its factorization.

1091379601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13776.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 1091379601 is about 33036.0348861663. The cubic root of 1091379601 is about 1029.5764749464.

The spelling of 1091379601 in words is "one billion, ninety-one million, three hundred seventy-nine thousand, six hundred one".